A simple flow channel regulating gate control circuit

Abstract

The present invention relates to a simple flow channel regulating gate control circuit, comprising a first motor circuit, which is electrically connected to an external power supply device, and a first rotary encoder is fixed to the tail of a motor in the first motor circuit; a second motor circuit, which is electrically connected to the external power supply device, and a second rotary encoder is fixed to the tail of the motor in the first motor circuit; a drive circuit, comprising: a first motor drive circuit, which is connected to the first motor circuit to control the forward and reverse rotation of the first motor circuit; a second motor drive circuit, which is connected to the second motor circuit to control the forward and reverse rotation of the second motor circuit; in the present invention, the first rotary encoder and the second rotary encoder are both installed at the tail of the motor, and the pulse numbers of the first rotary encoder and the first rotary encoder are used to indicate the actual opening of the gate, the installation operation is simple, and the problem of monitoring the gate opening by using a TR grating ruler sensor in the prior art is overcome.

Description

Technical Field

[0001] The invention relates to the technical field of float glass industry production, and in particular to a simple flow channel regulating gate control circuit. Background Art

[0002] The liquid channel regulating gate is a device that changes the speed of glass liquid flowing from the melting furnace into the tin bath. It determines the width and thickness of the float glass together with the edge drawing machine in the tin bath and the main drive of the annealing furnace. At present, the most widely used control method is to use the TR grating ruler to detect the actual gate opening, and then control the forward and reverse rotation of the motor through the lifting button of the control box to adjust the opening of the display board. It has obvious advantages and high adjustment accuracy. The disadvantage is that the cost is too high and the maintenance level of the workers is high. It is not very practical for some ordinary factories. This set of control methods is to retain the full functionality of the equipment while reducing costs, and there is no need to have too high requirements on the technical maintenance ability of the equipment personnel.

[0003] For example, the Chinese utility model patent "CN201020677586.2" discloses a flow control device for a flow channel regulating gate of a float glass, which includes a flow channel gate, a vertical shaft, a magnetic grating ruler, a magnetic grating ruler head (a), a screw lift, a synchronous motor, a reduction box, and a transmission shaft to form a mechanical part. In this patent, the opening signal of the flow channel gate can be directly measured by mainly cooperating with the magnetic grating ruler head (a) installed on the vertical shaft and the magnetic grating ruler installed on the frame. However, this method is very expensive and requires debugging with a grating ruler. Normally, it takes two days for an electrical engineer and an electrician to complete the debugging from the line to the completion. After the modification, the debugging can be completed in half a day without changing the personnel. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a simple flow channel regulating gate control circuit to solve the problems of high cost and labor-intensive debugging caused by the grating detection gate opening method used in glass production in the prior art.

[0005] The present invention solves the above technical problems through the following technical means:

[0006] A simple flow channel regulating gate control circuit comprises: a first motor circuit electrically connected to an external power supply device, wherein a first rotary encoder is fixed to the tail of a motor in the first motor circuit;

[0007] A second motor circuit is electrically connected to an external power supply device, and a second rotary encoder is fixed to the tail of the motor in the first motor circuit;

[0008] The driving circuit includes:

[0009] A first motor driving circuit is connected to the first motor circuit to control the forward and reverse rotation of the first motor circuit;

[0010] A second motor driving circuit is connected to the second motor circuit to control the forward and reverse rotation of the second motor circuit;

[0011] A protection circuit, wherein the protection circuit comprises an early warning module, and the early warning module is connected to the first motor drive circuit and the second motor drive circuit respectively;

[0012] The first rotary encoder and the second rotary encoder respectively detect the motor speed in the first motor circuit and the motor speed in the second motor circuit to measure the gate opening; the first motor drive circuit controls the forward and reverse rotation and speed of the first motor circuit; the second motor drive circuit controls the forward and reverse rotation and speed of the first motor circuit; and the early warning module realizes the early warning function of the limit state.

[0013] The first rotary encoder and the second rotary encoder are both installed at the tail of the motor. The pulse number of the first rotary encoder and the second rotary encoder is used to indicate the actual opening of the gate. The installation and operation are simple, which overcomes the problem of using the TR grating ruler sensor to monitor the gate opening in the prior art. In actual work, the cost of a single project in the TR grating ruler is about 100,000, while the cost of the rotary encoder solution is less than 10,000. The cost of the entire fluid channel gate device is only several hundred thousand. The cost competitiveness after replacement is obvious;

[0014] The early warning module makes the scene more intuitive, realizes early warning of limit status, improves safety performance, and improves the warning function.

[0015] As a further solution of the present invention: the first motor circuit includes: circuit breaker QL1.1, circuit breaker QL1.3, normally open contact KM1.1', normally open contact KM1.1, inverter UF1, normally open contact KA110, normally open contact KA120, normally open contact KA151, normally open contact KA161, normally closed contact KA171, motor M1, brake ZC1, the circuit breaker QL1.1 includes QL01 contact, QL02 contact The QL01 contact, QL02 contact, and QL03 contact of the circuit breaker QL1.1 are connected to the live wire L1, live wire L2, and live wire L3 respectively. The circuit breaker QL1.1 is also connected to the k01 contact, k02 contact, and k03 contact of the normally open contact KM1.1'. The QL02 contact and QL03 contact of the circuit breaker QL1.1 are also connected to the Q01 contact and Q02 contact of the circuit breaker QL1.3 respectively.

[0016] The Q01 contact and the Q02 contact of the circuit breaker QL1.3 are also connected to one end of the normally open contact KM1.1, and the other end of the normally open contact KM1.1 is connected to the brake ZC1;

[0017] The k01 contact, k02 contact, and k03 contact of the normally open contact KM1.1' are also connected to the L1, L2, and L3 contacts of the frequency converter UF1; the 18 contacts, 19 contacts, 32 contacts, and 27 contacts of the frequency converter UF1 are respectively connected to the A2 terminal of the normally open contact KA151, the A3 terminal of the normally open contact KA161, the A4 terminal of the normally open contact KA110, the A5 terminal of the normally open contact KA110, and the B1 terminal of the normally closed contact KA171;

[0018] The A1 terminal of the normally closed contact KA171 is respectively connected to the B5 terminal of the normally open contact KA120, the B4 terminal of the normally open contact KA110, the B3 terminal of the normally open contact KA161, the B2 terminal of the normally open contact KA151, and the 12 contact of the inverter UF1;

[0019] Contacts 96, 97, 98, and 99 of the frequency converter UF1 are respectively connected to the U terminal, V terminal, W terminal, and PE terminal of the motor M1.

[0020] As a further solution of the present invention: the second motor circuit includes: circuit breaker QL2.1, circuit breaker QL2.3, normally open contact KM2.1', normally open contact KM2.1, frequency converter UF2, normally open contact KA21, normally open contact KA22, normally open contact KA25, normally open contact KA26, normally open contact KA27, motor M2, brake ZC2;

[0021] The circuit breaker QL2.1 includes a QL01 contact, a QL02 contact, and a QL03 contact. The QL01 contact, QL02 contact, and QL03 contact of the circuit breaker QL2.1 are connected to the live wire L1, the live wire L2, and the live wire L3 respectively. The circuit breaker QL2.1 is also connected to the k01 contact, k02 contact, and k03 contact of the normally open contact KM2.1'. The QL02 contact and QL03 contact of the circuit breaker QL2.1 are also connected to the Q01 contact and Q02 contact of the circuit breaker QL2.3 respectively.

[0022] The Q01 contact and the Q02 contact of the circuit breaker QL2.3 are also connected to one end of the normally open contact KM2.1, and the other end of the normally open contact KM2.1 is connected to the brake ZC2;

[0023] The k01 contact, k02 contact, and k03 contact of the normally open contact KM2.1' are also connected to the L1, L2, and L3 contacts of the frequency converter UF2; the 18 contacts, 19 contacts, 32 contacts, and 27 contacts of the frequency converter UF2 are respectively connected to the A2 terminal of the normally open contact KA251, the A3 terminal of the normally open contact KA261, the A4 terminal of the normally open contact KA210, the A5 terminal of the normally open contact KA210, and the B1 terminal of the normally closed contact KA271;

[0024] The A1 terminal of the normally closed contact KA271 is respectively connected to the B5 terminal of the normally open contact KA220, the B4 terminal of the normally open contact KA210, the B3 terminal of the normally open contact KA261, the B2 terminal of the normally open contact KA251, and the 12 contact of the inverter UF2;

[0025] Contacts 96, 97, 98, and 99 of the frequency converter UF2 are respectively connected to the U terminal, V terminal, W terminal, and PE terminal of the motor M2.

[0026] As a further solution of the present invention: the first motor drive circuit includes: an emergency stop branch, a board width monitoring branch, a hand wheel limit branch, a brake branch, a control mode selection branch, a local indication branch, an automatic operation and indication branch, an operating table indication branch, a drive branch, and a lifting branch;

[0027] One end of the emergency stop branch, board width control branch, hand wheel limit branch, brake branch, control mode selection branch, local indication branch, automatic operation and indication branch, console indication branch, drive branch, and lifting branch is connected to the circuit breaker QL1.2, and the other end is connected to the N line;

[0028] The emergency stop branch includes a push switch SE11, a push switch SE12, and a coil KM1.1'. One end of the push switch SE11 is connected to the circuit breaker QL1.2, and the other end is connected to one end of the push switch SE12. The other end of the push switch SE12 is connected to one end of the coil KM1.1', and the other end of the coil KM1.1' is connected to the N line.

[0029] As a further solution of the present invention: the board width monitoring branch includes a coil KA1 and a coil KA2, one end of the coil KA1 is connected to the circuit breaker QL1.2 through a digital output DO, and the other end is connected to the N line, and one end of the coil KA2 is connected to the circuit breaker QL1.2 through a digital output DO, and the other end is connected to the N line;

[0030] The hand wheel limit branch includes a coil KA17 and a limit switch normally open contact SQ13. One end of the limit switch normally open contact SQ13 is connected to the circuit breaker QL1.2, and the other end is connected to one end of the coil KA17. The other end of the coil KA17 is connected to the N line.

[0031] As a further solution of the present invention: the holding brake branch includes one end of the normally open contact KA152, the normally open contact KA162, and the normally open contact KA171 connected, and the other ends of the normally open contact KA152, the normally open contact KA162, and the normally open contact KA171 are respectively connected to one end of QL1.2;

[0032] The control mode selection branch includes a conversion switch SA1 and a line switch SA2, both of which are arranged on the operating table, the first, third and fifth contacts of the conversion switch SA1 are connected to one end of the normally closed contact KA17, and the seventh and ninth contacts of the conversion switch SA2 are also connected to one end of the normally closed contact KA17;

[0033] The local indication branch includes a lamp HG1 ’ , the lamp HG1 is connected to the fourth contact of the change-over switch SA1.

[0034] As a further solution of the present invention: the automatic operation and indication branch includes a coil KA10 and a lamp HG1, one end of the coil KA10 is connected to the N line, and the other end is connected to the second contact of the conversion switch SA1, and the lamp HG1 is connected in parallel with the coil KA10;

[0035] The control console indication branch includes a lamp HW1, and the lamp HW1 is connected to the 26th contact of the transfer switch.

[0036] As a further solution of the present invention: the driving branch includes: a coil KA11, a normally closed contact KA141, a normally closed contact KA131, a normally closed contact KA121, a switch SF11, a switch SF11 1 One end of the coil KA11 is connected to the N line, and the other end of the coil KA11 is connected to the normally closed contact KA141. The normally closed contact KA141, the normally closed contact KA131, and the normally closed contact KA121 are connected in sequence. The other end of the normally closed contact KA121 is connected to the switch SF11, the switch SF11 1 Connection, the switch SF11, switch SF11 1 The other end is respectively connected to the sixth contact and the fourth contact of the conversion switch SA1;

[0037] Coil KA12, normally closed contact KA142, normally closed contact KA132, normally closed contact KA111, switch SF12, switch SF12 1 One end of the coil KA12 is connected to the N line, and the other end of the coil KA12 is connected to the normally closed contact KA142. The normally closed contact KA142, the normally closed contact KA132, and the normally closed contact KA111 are connected in sequence. The other end of the normally closed contact KA111 is connected to the switch SF12, the switch SF12 1 connection, the switch SF12, the switch SF12 1 The other end is respectively connected to the sixth contact and the fourth contact of the conversion switch SA1;

[0038] Coil KA13, normally closed contact KA143, normally closed contact KA122, normally closed contact KA112, switch SF13, switch SF131 One end of the coil KA13 is connected to the N line, and the other end of the coil KA13 is connected to the normally closed contact KA143. The normally closed contact KA143, the normally closed contact KA122, and the normally closed contact KA112 are connected in sequence. The other end of the normally closed contact KA112 is connected to the switch SF13 and the switch SF13 1 Connect, the switch SF13, switch SF13 1 The other end is respectively connected to the sixth contact and the fourth contact of the conversion switch SA1;

[0039] Coil KA14, normally closed contact KA133, normally closed contact KA123, normally closed contact KA113, switch SF14, switch SF14 1 One end of the coil KA14 is connected to the N line, and the other end of the coil KA14 is connected to the normally closed contact KA133. The normally closed contact KA133, the normally closed contact KA123, and the normally closed contact KA113 are connected in sequence. The other end of the normally closed contact KA113 is connected to the switch SF14, the switch SF14 1 connection, the switch SF14, the switch SF14 1 The other end is respectively connected to the sixth contact and the fourth contact of the conversion switch SA1.

[0040] As a further solution of the present invention: the lifting branch includes: coil KA15, coil KA16, limit switch normally closed contact SQ11, limit switch normally closed contact SQ12, normally closed contact KA162, normally closed contact KA152, normally open contact KA111, normally open contact KA13, normally open contact KA1, normally open contact KA121, normally open contact KA14, normally open contact KA2, normally open contact KA101, normally open contact KA102;

[0041] One end of the coil KA15 is connected to the N line, and the other end is connected to one end of the normally closed contact SQ11 of the limit switch, the other end of the normally closed contact SQ11 of the limit switch is connected to one end of the normally closed contact KA162, the other end of the normally closed contact KA162 is connected to the normally open contact KA111, the normally open contact KA13, and the normally open contact KA1, the other ends of the normally open contact KA111 and the normally open contact KA13 are both connected to the eighth contact of the conversion switch SA2, the other end of the normally open contact KA1 is connected to the normally open contact KA101, and the other end of the normally open contact KA101 is connected to the eighth contact of the conversion switch SA2;

[0042] One end of the coil KA16 is connected to the N line, and the other end is connected to one end of the normally closed contact SQ12 of the limit switch, the other end of the normally closed contact SQ12 of the limit switch is connected to one end of the normally closed contact KA152, the other end of the normally closed contact KA152 is connected to the normally open contact KA121, the normally open contact KA14, and the normally open contact KA2, the other ends of the normally open contact KA121 and the normally open contact KA14 are both connected to the eighth contact of the switching switch SA2, the other end of the normally open contact KA2 is connected to the normally open contact KA102, and the other end of the normally open contact KA102 is connected to the eighth contact of the switching switch SA2.

[0043] As a further solution of the present invention: the protection circuit further includes manual switches SQ23, SQ11, SQ12, SQ21, SQ22, a button SF, a coil KA0, a normally open contact KA0, and a normally closed contact KA0;

[0044] One end of the manual switch SQ23 is connected to the circuit breaker QL, and the other end is connected to one end of the button SF, the other end of the button SF is connected to one end of the coil KA0, and the other end of the coil KA0 is grounded;

[0045] One end of the normally open contact SQ11 of the limit switch is connected to the circuit breaker QL, and the other end is connected to one end of the normally open contact KA0, and the other end of the normally open contact KA0 is connected to the button SF;

[0046] One end of the limit switch normally open contact SQ12 and the limit switch normally open contact SQ21 is connected to the circuit breaker QL, and the other end is connected to one end of SQ23;

[0047] One end of the normally open contact SQ22 of the limit switch is connected to the circuit breaker QL, and the other end is connected to one end of the normally closed contact KA0, the other end of the normally closed contact KA0 is connected to one end of the early warning module, and the other end of the early warning module is connected to the N line;

[0048] The normally closed contact SQ11 of the limit switch, the normally closed contact SQ12 of the limit switch, the normally closed contact SQ21 of the limit switch, the normally closed contact SQ22 of the limit switch, and the manual switch SQ23 all provide protection for the safety of the equipment itself, but they have not been intuitively reflected on the local box. This time, the intermediate relay KA0 is connected in series through the limit switch, and then the early warning module is connected, which makes the site more intuitive. At the same time, the signal can be transmitted to the DCS (Distributed Control System) for remote display. The early warning module is installed on the local control box. When any limit switch or manual device is activated, there will be an audible and visual alarm, which can be silenced by confirming the button SF on the local box.

[0049] The advantages of the present invention are:

[0050] 1. In the present invention, the first rotary encoder and the second rotary encoder are both installed at the tail of the motor. The pulse numbers of the first rotary encoder and the second rotary encoder are used to indicate the actual opening of the gate. The installation and operation are simple, which overcomes the problem of using a TR grating ruler sensor to monitor the gate opening in the prior art. In actual work, the cost of a single project in a TR grating ruler is about 100,000 yuan, while the cost of a rotary encoder solution is less than 10,000 yuan. The cost of a complete set of liquid channel gate device is only several hundred thousand yuan. After replacement, the cost competitiveness is obvious;

[0051] The early warning module makes the scene more intuitive, realizes early warning of limit status, improves safety performance, and improves the warning function.

[0052] 2. In the present invention, the first rotary encoder and the second rotary encoder are installed at the tail of the motor, which is easy to install and can better save manpower and material resources compared to installing them at other positions.

[0053] 3. The present invention adds upper and lower limits, manual status and sound and light alarms, and improves the warning function. The normally closed contact SQ11 of the limit switch, the normally closed contact SQ12 of the limit switch, the normally closed contact SQ21 of the limit switch, the normally closed contact SQ22 of the limit switch, and the manual switch SQ23 all provide protection for the safety of the equipment itself. However, they have not been intuitively reflected on the local box. This time, the intermediate relay KA0 is connected in series through the limit switch, and then the sound and light alarm HA1 is connected, which makes the scene more intuitive. At the same time, the signal can be transmitted to the DCS (Distributed Control System) for remote display. The sound and light alarm HA1 is installed on the local control box. When any limit switch or manual device is actuated, there will be a sound and light alarm, and the sound and light alarm can be silenced by confirming the button SF on the local box. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 A block diagram of a simple flow channel regulating gate control circuit provided by an embodiment of the present invention.

[0055] Figure 2 A circuit schematic diagram of the connection between a first motor circuit and a second motor circuit in a simple fluid channel regulating gate control circuit provided by an embodiment of the present invention.

[0056] Figure 3 A circuit schematic diagram of a first motor circuit in a simple fluid channel regulating gate control circuit provided in an embodiment of the present invention.

[0057] Figure 4 A circuit schematic diagram of a second motor circuit in a simple fluid channel regulating gate control circuit provided in an embodiment of the present invention.

[0058] Figure 5 A circuit schematic diagram of a first motor driving circuit in a simple fluid channel regulating gate control circuit provided in an embodiment of the present invention.

[0059] Figure 6 The circuit schematic diagram of a protection circuit in a simple flow channel regulating gate control circuit provided by an embodiment of the present invention is as follows: DETAILED DESCRIPTION

[0060] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0061] Example 1

[0062] like Figure 1 , a simple flow channel regulating gate control circuit, comprising:

[0063] A first motor circuit is electrically connected to an external power supply device, and a first rotary encoder is fixed to the tail of the motor in the first motor circuit;

[0064] A second motor circuit is electrically connected to an external power supply device, and a second rotary encoder is fixed to the tail of the motor in the first motor circuit;

[0065] The driving circuit includes:

[0066] A first motor driving circuit is connected to the first motor circuit to control the forward and reverse rotation of the first motor circuit;

[0067] A second motor driving circuit is connected to the second motor circuit to control the forward and reverse rotation of the second motor circuit;

[0068] A protection circuit, wherein the protection circuit comprises an early warning module, and the early warning module is connected to the first motor drive circuit and the second motor drive circuit respectively;

[0069] The first rotary encoder and the second rotary encoder respectively detect the motor speed in the first motor circuit and the motor speed in the second motor circuit to measure the gate opening; the first motor drive circuit controls the forward and reverse rotation and speed of the first motor circuit; the second motor drive circuit controls the forward and reverse rotation and speed of the first motor circuit.

[0070] It should be noted that, in the scheme of the embodiment of the present invention, the first rotary encoder and the second rotary encoder are both installed at the tail of the motor, and the pulse number of the first rotary encoder and the second rotary encoder are used to indicate the actual opening of the gate. The installation operation is simple, and the problem of using a TR grating scale sensor to monitor the gate opening in the prior art is overcome. In actual work, the cost of a TR grating scale for a single project is about 100,000, while the cost of using a rotary encoder scheme is less than 10,000. The cost of a complete set of flow channel gate devices is only a few hundred thousand, and the cost competitive advantage after replacement is obvious.

[0071] In addition, the use of this device can greatly improve the efficiency of on-site commissioning personnel. Previously, when using grating rulers for commissioning, it normally took an electrical engineer and an electrician two days from line to commissioning. After the change, the commissioning can be completed in half a day without changing the personnel. Moreover, the grating ruler is a German brand and is not replaceable for the time being. After changing to a rotary encoder, the brand selection of encoders is greatly enhanced. With the gradual improvement of the quality of domestic encoders and display instruments, the range of options is wider.

[0072] It should be understood that the rotary encoder obtains the motor speed and further determines the gate opening. The method of obtaining the motor speed is a prior art and will not be described in detail here.

[0073] In the scheme of the embodiment of the present disclosure, the power supply equipment can be selected according to actual conditions, but in the glass manufacturing industry, the first / second motor circuit is usually connected to the live wire L1, live wire L2, live wire L3, N wire, and PE wire, so the power supply part will not be described in detail here.

[0074] In the solution of the embodiment of the present disclosure, the first motor circuit includes:

[0075] Circuit breaker QL1.1, circuit breaker QL1.3, normally open contact KM1.1', normally open contact KM1.1, frequency converter UF1, normally open contact KA110, normally open contact KA120, normally open contact KA151, normally open contact KA161, normally closed contact KA171, motor M1, brake ZC1, the circuit breaker QL1.1 includes QL01 contact, QL02 contact, QL03 contact, the circuit breaker The QL01 contact, QL02 contact, and QL03 contact of the circuit breaker QL1.1 are connected to the live wire L1, live wire L2, and live wire L3 respectively. The circuit breaker QL1.1 is also connected to the k01 contact, k02 contact, and k03 contact of the normally open contact KM1.1'. The QL02 contact and QL03 contact of the circuit breaker QL1.1 are also connected to the Q01 contact and Q02 contact of the circuit breaker QL1.3 respectively.

[0076] The Q01 contact and the Q02 contact of the circuit breaker QL1.3 are also connected to one end of the normally open contact KM1.1, and the other end of the normally open contact KM1.1 is connected to the brake ZC1;

[0077] The k01 contact, k02 contact, and k03 contact of the normally open contact KM1.1' are also connected to the L1, L2, and L3 contacts of the frequency converter UF1; the 18 contacts, 19 contacts, 32 contacts, and 27 contacts of the frequency converter UF1 are respectively connected to the A2 terminal of the normally open contact KA151, the A3 terminal of the normally open contact KA161, the A4 terminal of the normally open contact KA110, the A5 terminal of the normally open contact KA110, and the B1 terminal of the normally closed contact KA171;

[0078] The A1 terminal of the normally closed contact KA171 is respectively connected to the B5 terminal of the normally open contact KA120, the B4 terminal of the normally open contact KA110, the B3 terminal of the normally open contact KA161, the B2 terminal of the normally open contact KA151, and the 12 contact of the inverter UF1;

[0079] Contacts 96, 97, 98, and 99 of the frequency converter UF1 are respectively connected to the U terminal, V terminal, W terminal, and PE terminal of the motor M1.

[0080] The second motor circuit includes: circuit breaker QL2.1, circuit breaker QL2.3, normally open contact KM2.1', normally open contact KM2.1, frequency converter UF2, normally open contact KA21, normally open contact KA22, normally open contact KA25, normally open contact KA26, normally open contact KA27, motor M2, and brake ZC2.

[0081] The circuit breaker QL2.1 includes QL01 contact, QL02 contact, and QL03 contact. The QL01 contact, QL02 contact, and QL03 contact of the circuit breaker QL2.1 are respectively connected to the live wire L1, live wire L2, and live wire L3. The circuit breaker QL2.1 is also connected to the k01 contact, k02 contact, and k03 contact of the normally open contact KM2.1'. The QL02 contact and QL03 contact of the circuit breaker QL2.1 are also respectively connected to the Q01 contact and Q02 contact of the circuit breaker QL2.3.

[0082] The Q01 contact and the Q02 contact of the circuit breaker QL2.3 are also connected to one end of the normally open contact KM2.1, and the other end of the normally open contact KM2.1 is connected to the brake ZC2;

[0083] The k01 contact, k02 contact, and k03 contact of the normally open contact KM2.1' are also connected to the L1, L2, and L3 contacts of the frequency converter UF2; the 18 contacts, 19 contacts, 32 contacts, and 27 contacts of the frequency converter UF2 are respectively connected to the A2 terminal of the normally open contact KA251, the A3 terminal of the normally open contact KA261, the A4 terminal of the normally open contact KA210, the A5 terminal of the normally open contact KA210, and the B1 terminal of the normally closed contact KA271;

[0084] The A1 terminal of the normally closed contact KA271 is respectively connected to the B5 terminal of the normally open contact KA220, the B4 terminal of the normally open contact KA210, the B3 terminal of the normally open contact KA261, the B2 terminal of the normally open contact KA251, and the 12 contact of the inverter UF2;

[0085] Contacts 96, 97, 98, and 99 of the frequency converter UF2 are respectively connected to the U terminal, V terminal, W terminal, and PE terminal of the motor M2.

[0086] The first motor driving circuit is the same as the second motor driving circuit, so only the first motor driving circuit is described here. In the solution of the embodiment of the present disclosure, the first motor driving circuit includes:

[0087] Emergency stop branch, board width monitoring branch, handwheel limit branch, brake branch, control mode selection branch, local indication branch, automatic operation and indication branch, operating table indication branch, drive branch, lifting branch. One end of the emergency stop branch, board width control branch, handwheel limit branch, brake branch, control mode selection branch, local indication branch, automatic operation and indication branch, operating table indication branch, drive branch, and lifting branch is connected to the circuit breaker QL1.2, and the other end is connected to the N line. The other end of the circuit breaker QL1.2 is connected to the live wire.

[0088] Among them, the emergency stop branch includes a push switch SE11, a push switch SE12, and a coil KM1.1'. One end of the push switch SE11 is connected to the circuit breaker QL1.2, and the other end is connected to one end of the push switch SE12. The other end of the push switch SE12 is connected to one end of the coil KM1.1', and the other end of the coil KM1.1' is connected to the N line.

[0089] The board width monitoring branch includes coil KA1 and coil KA2. One end of the coil KA1 is connected to the circuit breaker QL1.2 through the digital output DO, and the other end is connected to the N line. One end of the coil KA2 is connected to the circuit breaker QL1.2 through the digital output DO, and the other end is connected to the N line.

[0090] The hand wheel limit branch includes a coil KA17 and a limit switch normally open contact SQ13. One end of the limit switch normally open contact SQ13 is connected to the circuit breaker QL1.2, and the other end is connected to one end of the coil KA17. The other end of the coil KA17 is connected to the N line.

[0091] The holding brake branch includes one end of the normally open contact KA152, the normally open contact KA162, and the normally open contact KA171 connected, and the other ends of the normally open contact KA152, the normally open contact KA162, and the normally open contact KA171 are respectively connected to one end of QL1.2;

[0092] The control mode selection branch includes a conversion switch SA1 and a line change switch SA2. The conversion switch SA1 and the line change switch SA2 are both arranged on the operating table. The first, third and fifth contacts of the conversion switch SA1 are connected to one end of the normally closed contact KA17, and the seventh and ninth contacts of the conversion switch SA2 are also connected to one end of the normally closed contact KA17.

[0093] The local indication branch includes a lamp HG1 ’ , the lamp HG1 is connected to the fourth contact of the switching switch SA1;

[0094] The automatic operation and indication branch includes a coil KA10 and a lamp HG1. One end of the coil KA10 is connected to the N line, and the other end is connected to the second contact of the conversion switch SA1. The lamp HG1 is connected in parallel with the coil KA10.

[0095] The console indication branch includes a lamp HW1, and the lamp HW1 is connected to the 26th contact of the transfer switch;

[0096] The driving branch comprises:

[0097] Coil KA11, normally closed contact KA141, normally closed contact KA131, normally closed contact KA121, switch SF11, switch SF11 1 One end of the coil KA11 is connected to the N line, and the other end of the coil KA11 is connected to the normally closed contact KA141. The normally closed contact KA141, the normally closed contact KA131, and the normally closed contact KA121 are connected in sequence. The other end of the normally closed contact KA121 is connected to the switch SF11, the switch SF11 1 Connection, the switch SF11, switch SF11 1 The other end is respectively connected to the sixth contact and the fourth contact of the conversion switch SA1;

[0098] It also includes coil KA12, normally closed contact KA142, normally closed contact KA132, normally closed contact KA111, switch SF12, switch SF12 1One end of the coil KA12 is connected to the N line, and the other end of the coil KA12 is connected to the normally closed contact KA142. The normally closed contact KA142, the normally closed contact KA132, and the normally closed contact KA111 are connected in sequence. The other end of the normally closed contact KA111 is connected to the switch SF12, the switch SF12 1 connection, the switch SF12, the switch SF12 1 The other end is respectively connected to the sixth contact and the fourth contact of the conversion switch SA1;

[0099] It also includes coil KA13, normally closed contact KA143, normally closed contact KA122, normally closed contact KA112, switch SF13, switch SF13 1 One end of the coil KA13 is connected to the N line, and the other end of the coil KA13 is connected to the normally closed contact KA143. The normally closed contact KA143, the normally closed contact KA122, and the normally closed contact KA112 are connected in sequence. The other end of the normally closed contact KA112 is connected to the switch SF13 and the switch SF13 1 Connect, the switch SF13, switch SF13 1 The other end is respectively connected to the sixth contact and the fourth contact of the conversion switch SA1;

[0100] It also includes coil KA14, normally closed contact KA133, normally closed contact KA123, normally closed contact KA113, switch SF14, switch SF14 1 One end of the coil KA14 is connected to the N line, and the other end of the coil KA14 is connected to the normally closed contact KA133. The normally closed contact KA133, the normally closed contact KA123, and the normally closed contact KA113 are connected in sequence. The other end of the normally closed contact KA113 is connected to the switch SF14, the switch SF14 1 connection, the switch SF14, the switch SF14 1 The other end is respectively connected to the sixth contact and the fourth contact of the conversion switch SA1;

[0101] The lifting branch includes: coil KA15, coil KA16, limit switch normally closed contact SQ11, limit switch normally closed contact SQ12, normally closed contact KA162, normally closed contact KA152, normally open contact KA111, normally open contact KA13, normally open contact KA1, normally open contact KA121, normally open contact KA14, normally open contact KA2, normally open contact KA101, normally open contact KA102;

[0102] One end of the coil KA15 is connected to the N line, and the other end is connected to one end of the normally closed contact SQ11 of the limit switch, the other end of the normally closed contact SQ11 of the limit switch is connected to one end of the normally closed contact KA162, the other end of the normally closed contact KA162 is connected to the normally open contact KA111, the normally open contact KA13, and the normally open contact KA1, the other ends of the normally open contact KA111 and the normally open contact KA13 are both connected to the eighth contact of the conversion switch SA2, the other end of the normally open contact KA1 is connected to the normally open contact KA101, and the other end of the normally open contact KA101 is connected to the eighth contact of the conversion switch SA2;

[0103] One end of the coil KA16 is connected to the N line, and the other end is connected to one end of the normally closed contact SQ12 of the limit switch, the other end of the normally closed contact SQ12 of the limit switch is connected to one end of the normally closed contact KA152, the other end of the normally closed contact KA152 is connected to the normally open contact KA121, the normally open contact KA14, and the normally open contact KA2, the other ends of the normally open contact KA121 and the normally open contact KA14 are both connected to the eighth contact of the switching switch SA2, the other end of the normally open contact KA2 is connected to the normally open contact KA102, and the other end of the normally open contact KA102 is connected to the eighth contact of the switching switch SA2.

[0104] The protection circuit also includes manual switches SQ23, SQ11, SQ12, SQ21, SQ22, a button SF, a coil KA0, a normally open contact KA0, and a normally closed contact KA0;

[0105] One end of the manual switch SQ23 is connected to the circuit breaker QL, and the other end is connected to one end of the button SF, the other end of the button SF is connected to one end of the coil KA0, and the other end of the coil KA0 is grounded;

[0106] One end of the normally open contact SQ11 of the limit switch is connected to the circuit breaker QL, and the other end is connected to one end of the normally open contact KA0, and the other end of the normally open contact KA0 is connected to the button SF;

[0107] One end of the limit switch normally open contact SQ12 and the limit switch normally open contact SQ21 is connected to the circuit breaker QL, and the other end is connected to one end of SQ23;

[0108] One end of the normally open contact SQ22 of the limit switch is connected to the circuit breaker QL, and the other end is connected to one end of the normally closed contact KA0, the other end of the normally closed contact KA0 is connected to one end of the early warning module, and the other end of the early warning module is connected to the N line;

[0109] Wherein, the early warning module is an audible and visual alarm HA1, which is fixedly installed on the local control box.

[0110] The normally closed contact SQ11 of the limit switch, the normally closed contact SQ12 of the limit switch, the normally closed contact SQ21 of the limit switch, the normally closed contact SQ22 of the limit switch (SQ21 and SQ22 are components in the second motor drive circuit), and the manual switch SQ23 all provide protection for the safety of the equipment itself, but they have not been intuitively reflected on the local box. This time, the intermediate relay KA0 is connected in series through the limit switch, and then the early warning module is connected, which makes the site more intuitive. At the same time, the signal can be transmitted to the DCS (Distributed Control System) for remote display. The early warning module is installed on the local control box. When any of the limit or manual devices of the two gates is activated, there will be an audible and visual alarm, and the audible and visual alarm can be silenced by confirming the button SF on the local box.

[0111] It should be emphasized that a relay usually includes two parts, one is a coil and the other is a contact, and there can be multiple contacts used in conjunction with the coil. For example, the coil KA11, the normally open contact KA110, the normally open contact KA111, the normally closed contact KA111, the normally closed contact KA112, and the normally closed contact KA113 in this embodiment are a whole, and other relays are similar, so they will not be described in detail here.

[0112] Working principle: During specific operation, the opening of the gate is known through the first rotary encoder and the second rotary encoder installed at the tail of the motor, which saves costs to the greatest extent and is also very simple to debug;

[0113] The normally closed contact SQ11, SQ12, SQ21, SQ22 (SQ21 and SQ22 are components in the second motor drive circuit) and manual switch SQ23 in the protection circuit all provide protection for the safety of the equipment itself. However, they have not been intuitively reflected in the local box. This time, the intermediate relay KA0 is connected in series through the limit switch, and then the early warning module is connected. The site is more intuitive, and the signal can be transmitted to the DCS (Distributed Control System) for remote display. The early warning module is installed in the local control box. When any of the limit or manual devices of the two gates is activated, there will be an audible and visual alarm, which can be silenced by confirming the button SF on the local box.

[0114] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A simple flow channel regulating gate control circuit, characterized in that: include: A first motor circuit is electrically connected to an external power supply device, and a first rotary encoder is fixed to the tail of the motor in the first motor circuit; A second motor circuit is electrically connected to an external power supply device, and a second rotary encoder is fixed to the tail of the motor in the second motor circuit; The driving circuit includes: A first motor driving circuit is connected to the first motor circuit to control the forward and reverse rotation of the first motor circuit; A second motor driving circuit is connected to the second motor circuit to control the forward and reverse rotation of the second motor circuit; A protection circuit, wherein the protection circuit comprises an early warning module, and the early warning module is connected to the first motor drive circuit and the second motor drive circuit respectively; The first rotary encoder and the second rotary encoder detect the motor speed in the first motor circuit and the motor speed in the second motor circuit respectively to measure the gate opening; the first motor drive circuit controls the forward and reverse rotation and speed of the first motor circuit; the second motor drive circuit controls the forward and reverse rotation and speed of the second motor circuit; and the early warning module realizes the early warning function of the limit state; The first motor drive circuit includes: an emergency stop branch, a board width monitoring branch, a hand wheel limit branch, a brake branch, a control mode selection branch, a local indication branch, an automatic operation and indication branch, an operating table indication branch, a drive branch, and a lifting branch; One end of the emergency stop branch, board width control branch, hand wheel limit branch, brake branch, control mode selection branch, local indication branch, automatic operation and indication branch, console indication branch, drive branch, and lifting branch is connected to the circuit breaker QL1.2, and the other end is connected to the N line; The emergency stop branch includes a push switch SE11, a push switch SE12, and a coil KM1.1'. One end of the push switch SE11 is connected to the circuit breaker QL1.2, and the other end is connected to one end of the push switch SE12. The other end of the push switch SE12 is connected to one end of the coil KM1.1', and the other end of the coil KM1.1' is connected to the N line.

2. The simplified flow channel regulating gate control circuit according to claim 1, characterized in that: The first motor circuit comprises: Circuit breaker QL1.1, circuit breaker QL1.3, normally open contact KM1.1', normally open contact KM1.1, frequency converter UF1, normally open contact KA110, normally open contact KA120, normally open contact KA151, normally open contact KA161, normally closed contact KA171, motor M1, brake ZC1, the circuit breaker QL1.1 includes QL01 contact, QL02 contact, QL03 contact, the The QL01 contact, QL02 contact and QL03 contact of the circuit breaker QL1.1 are connected to the live wire L1, live wire L2 and live wire L3 respectively. The circuit breaker QL1.1 is also connected to the k01 contact, k02 contact and k03 contact of the normally open contact KM1.1'. The QL02 contact and QL03 contact of the circuit breaker QL1.1 are also connected to the Q01 contact and Q02 contact of the circuit breaker QL1.3 respectively. The Q01 contact and the Q02 contact of the circuit breaker QL1.3 are also connected to one end of the normally open contact KM1.1, and the other end of the normally open contact KM1.1 is connected to the brake ZC1; The k01 contact, k02 contact, and k03 contact of the normally open contact KM1.1' are also connected to the L1, L2, and L3 contacts of the frequency converter UF1; the 18 contacts, 19 contacts, and 27 contacts of the frequency converter UF1 are respectively connected to the A2 terminal of the normally open contact KA151, the A3 terminal of the normally open contact KA161, and the B1 terminal of the normally closed contact KA171; the 32 contact of the frequency converter UF1 is connected to the A4 terminal of the normally open contact KA110 and the A5 terminal of the normally open contact KA120; The A1 terminal of the normally closed contact KA171 is respectively connected to the B5 terminal of the normally open contact KA120, the B4 terminal of the normally open contact KA110, the B3 terminal of the normally open contact KA161, the B2 terminal of the normally open contact KA151, and the 12 contact of the inverter UF1; Contacts 96, 97, 98, and 99 of the frequency converter UF1 are respectively connected to the U terminal, V terminal, W terminal, and PE terminal of the motor M1.

3. The simplified flow channel regulating gate control circuit according to claim 2, characterized in that: The second motor circuit includes: circuit breaker QL2.1, circuit breaker QL2.3, normally open contact KM2.1', normally open contact KM2.1, frequency converter UF2, normally open contact KA21, normally open contact KA22, normally open contact KA25, normally open contact KA26, normally open contact KA27, motor M2, brake ZC2; The circuit breaker QL2.1 includes a QL01 contact, a QL02 contact, and a QL03 contact. The QL01 contact, QL02 contact, and QL03 contact of the circuit breaker QL2.1 are connected to the live wire L1, the live wire L2, and the live wire L3 respectively. The circuit breaker QL2.1 is also connected to the k01 contact, k02 contact, and k03 contact of the normally open contact KM2.1'. The QL02 contact and QL03 contact of the circuit breaker QL2.1 are also connected to the Q01 contact and Q02 contact of the circuit breaker QL2.3 respectively. The Q01 contact and the Q02 contact of the circuit breaker QL2.3 are also connected to one end of the normally open contact KM2.1, and the other end of the normally open contact KM2.1 is connected to the brake ZC2; The k01 contact, k02 contact, and k03 contact of the normally open contact KM2.1' are also connected to the L1, L2, and L3 contacts of the frequency converter UF2; the 18 contacts, 19 contacts, and 27 contacts of the frequency converter UF2 are respectively connected to the A2 terminal of the normally open contact KA251, the A3 terminal of the normally open contact KA261, and the B1 terminal of the normally closed contact KA271; the 32 contact of the frequency converter UF2 is connected to the A4 terminal of the normally open contact KA210 and the A5 terminal of the normally open contact KA220; The A1 terminal of the normally closed contact KA271 is respectively connected to the B5 terminal of the normally open contact KA220, the B4 terminal of the normally open contact KA210, the B3 terminal of the normally open contact KA261, the B2 terminal of the normally open contact KA251, and the 12 contact of the inverter UF2; Contacts 96, 97, 98, and 99 of the frequency converter UF2 are respectively connected to the U terminal, V terminal, W terminal, and PE terminal of the motor M2.

4. The simplified flow channel regulating gate control circuit according to claim 1, characterized in that: The board width monitoring branch includes coil KA1 and coil KA2. One end of the coil KA1 is connected to the circuit breaker QL1.2 through the digital output DO, and the other end is connected to the N line. One end of the coil KA2 is connected to the circuit breaker QL1.2 through the digital output DO, and the other end is connected to the N line. The hand wheel limit branch includes a coil KA17 and a limit switch normally open contact SQ13. One end of the limit switch normally open contact SQ13 is connected to the circuit breaker QL1.2, and the other end is connected to one end of the coil KA17. The other end of the coil KA17 is connected to the N line.

5. The simplified flow channel regulating gate control circuit according to claim 4, characterized in that: The holding brake branch includes a normally open contact KA152, a normally open contact KA162, and a normally open contact KA171, and the other ends of the normally open contact KA152, the normally open contact KA162, and the normally open contact KA171 are respectively connected to one end of QL1.2; The control mode selection branch includes a conversion switch SA1 and a conversion switch SA2, both of which are arranged on the operating table, the first, third and fifth contacts of the conversion switch SA1 are connected to one end of the normally closed contact KA17, and the seventh and ninth contacts of the conversion switch SA2 are also connected to one end of the normally closed contact KA17; The local indication branch includes a lamp HG1, and the lamp HG1 is connected to the fourth contact of the conversion switch SA1.

6. The simplified flow channel regulating gate control circuit according to claim 5, characterized in that: The automatic operation and indication branch includes a coil KA10 and a lamp HG1. One end of the coil KA10 is connected to the N line, and the other end is connected to the second contact of the conversion switch SA1. The lamp HG1 is connected in parallel with the coil KA10. The control console indication branch includes a lamp HW1, and the lamp HW1 is connected to the 26th contact of the transfer switch.

7. The simplified flow channel regulating gate control circuit according to claim 6, characterized in that: The driving branch comprises: Coil KA11, normally closed contact KA141, normally closed contact KA131, normally closed contact KA121, switch SF11, switch SF11 1 One end of the coil KA11 is connected to the N line, and the other end of the coil KA11 is connected to the normally closed contact KA141. The normally closed contact KA141, the normally closed contact KA131, and the normally closed contact KA121 are connected in sequence. The other end of the normally closed contact KA121 is connected to the switch SF11, the switch SF11 1 connection, the switch SF11, the switch SF11 1 The other end is respectively connected to the sixth contact and the fourth contact of the conversion switch SA1; Coil KA12, normally closed contact KA142, normally closed contact KA132, normally closed contact KA111, switch SF12, switch SF12 1 One end of the coil KA12 is connected to the N line, and the other end of the coil KA12 is connected to the normally closed contact KA142. The normally closed contact KA142, the normally closed contact KA132, and the normally closed contact KA111 are connected in sequence. The other end of the normally closed contact KA111 is connected to the switch SF12, the switch SF12 1 connection, the switch SF12, the switch SF12 1 The other end is respectively connected to the sixth contact and the fourth contact of the conversion switch SA1; Coil KA13, normally closed contact KA143, normally closed contact KA122, normally closed contact KA112, switch SF13, switch SF13 1 One end of the coil KA13 is connected to the N line, and the other end of the coil KA13 is connected to the normally closed contact KA143. The normally closed contact KA143, the normally closed contact KA122, and the normally closed contact KA112 are connected in sequence. The other end of the normally closed contact KA112 is connected to the switch SF13 and the switch SF13 1 Connect, the switch SF13, switch SF13 1 The other end is respectively connected to the sixth contact and the fourth contact of the conversion switch SA1; Coil KA14, normally closed contact KA133, normally closed contact KA123, normally closed contact KA113, switch SF14, switch SF14 1 One end of the coil KA14 is connected to the N line, and the other end of the coil KA14 is connected to the normally closed contact KA133. The normally closed contact KA133, the normally closed contact KA123, and the normally closed contact KA113 are connected in sequence. The other end of the normally closed contact KA113 is connected to the switch SF14, the switch SF14 1 connection, the switch SF14, the switch SF14 1 The other end is respectively connected to the sixth contact and the fourth contact of the conversion switch SA1.

8. The simplified flow channel regulating gate control circuit according to claim 1, characterized in that: The lifting branch includes: coil KA15, coil KA16, limit switch normally closed contact SQ11, limit switch normally closed contact SQ12, normally closed contact KA162, normally closed contact KA152, normally open contact KA111, normally open contact KA13, normally open contact KA1, normally open contact KA121, normally open contact KA14, normally open contact KA2, normally open contact KA101, normally open contact KA102; One end of the coil KA15 is connected to the N line, and the other end is connected to one end of the normally closed contact SQ11 of the limit switch, the other end of the normally closed contact SQ11 of the limit switch is connected to one end of the normally closed contact KA162, the other end of the normally closed contact KA162 is connected to the normally open contact KA111, the normally open contact KA13, and the normally open contact KA1, the other ends of the normally open contact KA111 and the normally open contact KA13 are both connected to the eighth contact of the conversion switch SA2, the other end of the normally open contact KA1 is connected to the normally open contact KA101, and the other end of the normally open contact KA101 is connected to the eighth contact of the conversion switch SA2; One end of the coil KA16 is connected to the N line, and the other end is connected to one end of the normally closed contact SQ12 of the limit switch, the other end of the normally closed contact SQ12 of the limit switch is connected to one end of the normally closed contact KA152, the other end of the normally closed contact KA152 is connected to the normally open contact KA121, the normally open contact KA14, and the normally open contact KA2, the other ends of the normally open contact KA121 and the normally open contact KA14 are both connected to the eighth contact of the switching switch SA2, the other end of the normally open contact KA2 is connected to the normally open contact KA102, and the other end of the normally open contact KA102 is connected to the eighth contact of the switching switch SA2.

9. The simplified flow channel regulating gate control circuit according to claim 1, characterized in that: The protection circuit includes a manual switch SQ23, a limit switch normally open contact SQ11, a limit switch normally open contact SQ12, a limit switch normally open contact SQ21, a limit switch normally open contact SQ22, a button SF, a coil KA0, a normally open contact KA0, and a normally closed contact KA0; One end of the manual switch SQ23 is connected to the circuit breaker QL, and the other end is connected to one end of the button SF, the other end of the button SF is connected to one end of the coil KA0, and the other end of the coil KA0 is grounded; One end of the normally open contact SQ11 of the limit switch is connected to the circuit breaker QL, and the other end is connected to one end of the normally open contact KA0, and the other end of the normally open contact KA0 is connected to the button SF; One end of the limit switch normally open contact SQ12 and the limit switch normally open contact SQ21 is connected to the circuit breaker QL, and the other end is connected to one end of SQ23; One end of the normally open contact SQ22 of the limit switch is connected to the circuit breaker QL, and the other end is connected to one end of the normally closed contact KA0. The other end of the normally closed contact KA0 is connected to one end of the early warning module, and the other end of the early warning module is connected to the N line.

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