Steam control system

Abstract

The invention provides a steam control system, and belongs to the technical field of pneumatics. The steam control system comprises a gas source assembly, a pump room assembly and a control assembly. The pump room assembly comprises an air inlet diaphragm valve, an exhaust diaphragm valve and an air pressure controller, a first control air port of the air inlet diaphragm valve and a first control air port of the exhaust diaphragm valve are communicated with the air source assembly, and the air pressure controller is connected between a second control air port of the exhaust diaphragm valve and the air source assembly in series. A working gas port of the gas inlet diaphragm valve is connected to a gas inlet of the steam reciprocating pump in series, and a working gas port of the exhaust diaphragm valve is connected to an exhaust port of the steam reciprocating pump in series. The control assembly comprises a pressure regulating valve, a working gas port of the pressure regulating valve is connected between a second control gas port of the gas inlet diaphragm valve and the gas source assembly in series, and a control gas port of the pressure regulating valve is used for being connected to a gas inlet of the steam reciprocating pump in parallel. Starting, stopping and speed regulation of the steam reciprocating pump can be remotely controlled, and the anti-explosion performance and safety of a pump room area are improved.

Description

Technical Field

[0001] The present invention belongs to the field of pneumatic technology, and in particular relates to a steam control system. Background Art

[0002] Steam reciprocating pumps have the characteristics of being applicable to a wide range of media and not requiring electric drive, and are widely used in dangerous working areas on various oil tankers and cargo ships.

[0003] In related technologies, steam reciprocating pumps are generally arranged in dangerous areas at the bottom of the ship and are far away from the control room. The start, stop, speed regulation, status monitoring and other operations of the steam reciprocating pump are realized through a remote pneumatic control system. Both the steam reciprocating pump and the remote pneumatic control system are centrally supplied with air from an air source.

[0004] However, in the related art, the centralized air supply to the pneumatic control system from an air source is prone to potential safety hazards. Summary of the invention

[0005] The embodiment of the present disclosure provides a steam control system that can remotely control the start, stop and speed regulation of a steam reciprocating pump, thereby improving the explosion-proofness and safety of the pump room area. The technical solution is as follows:

[0006] The disclosed embodiment provides a steam control system, which is applied to a steam reciprocating pump, and includes an air source component, a pump cabin component, and a control component. The pump cabin component includes an air intake diaphragm valve, an exhaust diaphragm valve, and an air pressure controller. The first control air port of the air intake diaphragm valve and the first control air port of the exhaust diaphragm valve are respectively connected to the air source component. The working air port of the air pressure controller is connected in series between the second control air port of the exhaust diaphragm valve and the air source component. The control air port of the air pressure controller is used to be connected in parallel to the exhaust port of the steam reciprocating pump. The working air port of the air intake diaphragm valve is used to be connected in series to the air intake of the steam reciprocating pump. The working air port of the exhaust diaphragm valve is used to be connected in series to the exhaust port of the steam reciprocating pump. The control component includes a pressure regulating valve. The working air port of the pressure regulating valve is connected in series between the second control air port of the air intake diaphragm valve and the air source component.

[0007] In one implementation of the present disclosure, the pump cabin assembly further comprises a first pressure reducing filter valve group and a second pressure reducing filter valve group. The first pressure reducing filter valve group is connected in series between the first control air port of the air inlet diaphragm valve and the air source assembly. The second pressure reducing filter valve group is connected in series between the first control air port of the air exhaust diaphragm valve and the air source assembly.

[0008] In another implementation of the present disclosure, the first pressure reducing filter valve group includes a first air filter, a first pressure reducing valve and a first lubricator connected in series. The second pressure reducing filter valve group includes a second air filter, a second pressure reducing valve and a second lubricator connected in series.

[0009] In another embodiment of the present disclosure, the control assembly further includes a mechanical travel switch, a pump room muffler, a gas-to-electric converter, an electromagnetic stop valve, and a control panel. The switch contact of the mechanical travel switch is drivingly connected to the piston rod of the steam reciprocating pump, the air inlet of the mechanical travel switch is connected to the air source assembly, and the first working air port of the mechanical travel switch is connected to the air inlet of the pump room muffler. The control air port of the gas-to-electric converter is connected to the second working air port of the mechanical travel switch. The electromagnetic stop valve is connected in series between the second control air port of the air inlet diaphragm valve and the air source assembly. The control panel is electrically connected to the gas-to-electric converter and the electromagnetic stop valve, respectively.

[0010] In another implementation of the present disclosure, the pump cabin assembly further comprises a third pressure reducing filter valve assembly, and the third pressure reducing filter valve assembly is connected in series between the air inlet of the mechanical travel switch and the air source assembly.

[0011] In yet another implementation of the present disclosure, the third pressure reducing filter valve group includes a third air filter, a third pressure reducing valve, and a third oil mist collector which are sequentially connected in series.

[0012] In another implementation of the present disclosure, the control assembly further includes a fourth pressure reducing filter valve group. The fourth pressure reducing filter valve group is connected in series between the air source assembly and the second control air port of the air inlet diaphragm valve.

[0013] In yet another implementation of the present disclosure, the fourth pressure reducing filter valve group includes a fourth air filter, a fourth pressure reducing valve, and a fourth oil mist collector which are sequentially connected in series.

[0014] In another implementation of the present disclosure, the air source assembly includes an air pump and a first stop valve, the first stop valve is arranged at the air outlet of the air pump, and the control assembly also includes a second stop valve, the second stop valve is connected in series between the first stop valve and the fourth pressure reducing filter valve assembly.

[0015] In another implementation of the present disclosure, the air source assembly further includes a dryer group, a relief valve and an air source muffler. The dryer group is connected in series between the air pump and the first stop valve. The control air port of the relief valve is connected in parallel with the dryer group, and the working air port of the relief valve is connected to the air inlet of the air source muffler.

[0016] The technical solution provided by the embodiments of the present disclosure has the following beneficial effects:

[0017] The steam is transported to the pump cabin assembly and the control assembly respectively through the air source assembly. A part of the steam enters the first control air port of the air inlet diaphragm valve of the pump cabin assembly to provide a stable air pressure for the opening change of the air inlet diaphragm valve, and another part of the steam enters the second control air port of the air inlet diaphragm valve after passing through the pressure regulating valve of the control assembly. The first control air port and the second control air port of the air inlet diaphragm valve are both ventilated and form a pressure difference, so the air inlet diaphragm valve connected in series to the air inlet of the steam reciprocating pump is opened, and the steam generated by the air outlet of the boiler in the pump cabin enters the air inlet of the steam reciprocating pump, so that the steam reciprocating pump starts to work. Another part of the steam flows to the exhaust diaphragm valve of the pump cabin assembly, and this part of the steam enters the first control air port of the exhaust diaphragm valve and the working air port of the air pressure controller respectively. Since the control air port of the air pressure controller is connected in parallel to the exhaust port of the steam reciprocating pump, the opening of the working air port of the air pressure controller can automatically change according to the air pressure at the exhaust port of the steam reciprocating pump, so that the first control air port and the second control air port of the exhaust diaphragm valve are ventilated and a pressure difference is formed, so the exhaust diaphragm valve connected in series to the exhaust port of the steam reciprocating pump opens, and the steam in the steam reciprocating pump is discharged.

[0018] Furthermore, under the control of the pressure regulating valve, the air pressure at the second control port of the air inlet diaphragm valve will change, so that the air pressure difference between the first control port and the second control port of the air inlet diaphragm valve will change, thereby realizing the adjustment of the opening size of the air inlet diaphragm valve by the pressure regulating valve, thereby changing the steam flow entering the steam reciprocating pump. When the pressure regulating valve increases the steam pressure entering the second control port of the air inlet diaphragm valve, the pressure difference between the first control port and the second control port of the air inlet diaphragm valve becomes larger, the opening of the air inlet diaphragm valve becomes larger, the steam flow at the air inlet of the steam reciprocating pump increases, and the steam reciprocating pump works faster. When the pressure regulating valve reduces the steam pressure entering the second control port of the air inlet diaphragm valve, the pressure difference between the first control port and the second control port of the air inlet diaphragm valve becomes smaller, the opening of the air inlet diaphragm valve becomes smaller, the steam flow at the air inlet of the steam reciprocating pump decreases, and the steam reciprocating pump works slower. Thus, the speed regulation of the steam reciprocating pump can be achieved.

[0019] In other words, the steam control system can remotely control the start, stop and speed regulation of the steam reciprocating pump, thereby improving the explosion-proofness and safety of the pump room area. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 is a gas circuit diagram of a steam control system provided by an embodiment of the present disclosure;

[0022] Figure 2 is a gas circuit diagram of a first pressure reducing filter valve group provided in an embodiment of the present disclosure;

[0023] Figure 3 is a gas circuit diagram of a second pressure reducing filter valve assembly provided in an embodiment of the present disclosure;

[0024] Figure 4 This is a gas circuit diagram of a fourth pressure reducing filter valve group provided in an embodiment of the present disclosure.

[0025] Figure 5 This is a gas circuit diagram of a third pressure reducing filter valve group provided in an embodiment of the present disclosure.

[0026] The symbols in the figure mean the following:

[0027] 10. Air source assembly;

[0028] 101, air pump; 102, first stop valve; 103, dryer group; 1031, cooler; 1032, degreaser; 1033, air dryer; 1034, air-controlled one-way valve; 104, overflow valve; 105, air source muffler; 106, air storage tank; 107, pressure gauge;

[0029] 20. Pump room assembly;

[0030] 201, air inlet diaphragm valve; 202, exhaust diaphragm valve; 203, air pressure controller; 204, first pressure reducing filter valve group; 2041, first air filter; 2042, first pressure reducing valve; 2043, first oil mist device; 205, second pressure reducing filter valve group; 2051, second air filter; 2052, second pressure reducing valve; 2053, second oil mist device; 206, third pressure reducing filter valve group; 2061, third air filter; 2062, third pressure reducing valve; 2063, third oil mist device;

[0031] 30. Control components;

[0032] 301, pressure regulating valve; 302, mechanical travel switch; 303, pump room muffler; 304, gas-to-electric converter; 305, electromagnetic stop valve; 306, control panel; 307, fourth pressure reducing filter valve group; 3071, fourth air filter; 3072, fourth pressure reducing valve; 3073, fourth oil mist collector; 308, second stop valve;

[0033] 100. Steam reciprocating pump;

[0034] 200. Boiler air outlet. DETAILED DESCRIPTION

[0035] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0036] Figure 1 is a gas circuit diagram of a steam control system provided by an embodiment of the present disclosure, such as Figure 1 As shown, the embodiment of the present disclosure provides a steam control system, including an air source component 10, a pump cabin component 20 and a control component 30. The pump cabin component 20 includes an air intake diaphragm valve 201, an exhaust diaphragm valve 202 and an air pressure controller 203. The first control air port of the air intake diaphragm valve 201 and the first control air port of the exhaust diaphragm valve 202 are respectively connected to the air source component 10, the working air port of the air pressure controller 203 is connected in series between the second control air port of the exhaust diaphragm valve 202 and the air source component 10, the control air port of the air pressure controller 203 is used to be connected in parallel to the air outlet f of the steam reciprocating pump 100, the working air port of the air intake diaphragm valve 201 is used to be connected in series to the air intake e of the steam reciprocating pump 100, and the working air port of the exhaust diaphragm valve 202 is used to be connected in series to the air outlet f of the steam reciprocating pump 100. The control component 30 includes a pressure regulating valve 301, and the working air port of the pressure regulating valve 301 is connected in series between the second control air port of the air intake diaphragm valve 201 and the air source component 10.

[0037] Steam is transported to the pump cabin assembly 20 and the control assembly 30 respectively through the air source assembly 10. A part of the steam enters the first control air port of the air inlet diaphragm valve 201 of the pump cabin assembly 20 to provide a stable air pressure for the opening change of the air inlet diaphragm valve 201, and another part of the steam enters the second control air port of the air inlet diaphragm valve 201 after passing through the pressure regulating valve 301 of the control assembly 30. The first control air port and the second control air port of the air inlet diaphragm valve 201 are both ventilated and form a pressure difference, so the air inlet diaphragm valve 201 connected in series to the air inlet e of the steam reciprocating pump 100 is opened, and the steam generated by the boiler outlet 200 in the pump cabin enters the air inlet e of the steam reciprocating pump 100, so that the steam reciprocating pump 100 starts to work. Another part of the steam flows to the exhaust diaphragm valve 202 of the pump cabin assembly 20, and this part of the steam enters the first control air port of the exhaust diaphragm valve 202 and the working air port of the air pressure controller 203 respectively. Since the control air port of the air pressure controller 203 is connected in parallel to the air outlet f of the steam reciprocating pump 100, the opening of the working air port of the air pressure controller 203 can automatically change according to the air pressure at the air outlet f of the steam reciprocating pump 100, so that the first control air port and the second control air port of the exhaust diaphragm valve 202 are both ventilated and a pressure difference is formed, so the exhaust diaphragm valve 202 connected in series to the air outlet f of the steam reciprocating pump 100 opens, and the steam in the steam reciprocating pump 100 is discharged.

[0038] Furthermore, under the control of the pressure regulating valve 301, the air pressure at the second control port of the air inlet diaphragm valve 201 will change, so that the air pressure difference between the first control port and the second control port of the air inlet diaphragm valve 201 will change, thereby achieving the adjustment of the opening of the air inlet diaphragm valve 201 by the pressure regulating valve 301, thereby changing the steam flow entering the steam reciprocating pump 100. When the pressure regulating valve 301 increases the steam pressure entering the second control port of the air inlet diaphragm valve 201, the pressure difference between the first control port and the second control port of the air inlet diaphragm valve 201 increases, the opening of the air inlet diaphragm valve 201 increases, the steam flow at the air inlet e of the steam reciprocating pump 100 increases, and the steam reciprocating pump 100 works faster. When the pressure regulating valve 301 reduces the steam pressure entering the second control port of the air inlet diaphragm valve 201, the pressure difference between the first control port and the second control port of the air inlet diaphragm valve 201 becomes smaller, the opening of the air inlet diaphragm valve 201 becomes smaller, the steam flow rate at the air inlet e of the steam reciprocating pump 100 decreases, and the steam reciprocating pump 100 slows down. Thus, the speed regulation of the steam reciprocating pump 100 can be achieved.

[0039] That is to say, the steam control system can remotely control the start, stop and speed regulation of the steam reciprocating pump 100, thereby improving the explosion-proofness and safety of the pump room area.

[0040] In addition, in this embodiment, the air source assembly 10 is located in the engine room of the ship, the pump room assembly 20 and the steam reciprocating pump 100 are located in the pump room of the ship, and the control assembly 30 is located in the control room of the ship. In this way, the distance between the pump room assembly 20 and the steam reciprocating pump 100 is relatively close, which is conducive to pipeline connection. In addition, since the working noise in the pump room is relatively large and there may be dangerous gases, the air source assembly 10 and the control assembly 30 are separated from the pump room to ensure operational safety.

[0041] Continue to see Figure 1 In this embodiment, the pump cabin assembly 20 further includes a first pressure reducing filter valve group 204 and a second pressure reducing filter valve group 205. The first pressure reducing filter valve group 204 is connected in series between the first control air port of the air inlet diaphragm valve 201 and the air source assembly 10. The second pressure reducing filter valve group 205 is connected in series between the first control air port of the air exhaust diaphragm valve 202 and the air source assembly 10.

[0042] It is worth noting that the first pressure reducing filter valve group 204 and the first control air port of the air intake diaphragm valve 201 are connected to form an air intake execution air path a.

[0043] Because the steam generated from the air pump 101 contains more impurities and moisture, and has a higher pressure, it is easy to damage the working components if it directly enters the working components in the air path, so the first pressure reducing filter valve group 204 used has the function of filtering and reducing pressure on the steam passing therethrough. When the steam control system is started, the steam output from the air source component 10 first enters the first pressure reducing filter valve group 204 in the air intake execution air path a to complete the filtering and reducing pressure treatment. After filtering and reducing pressure, the steam continues to enter the first control air port of the air intake diaphragm valve 201 along the air intake execution air path a as the execution air source, providing a stable air pressure for the opening change of the air intake diaphragm valve 201.

[0044] It is worth noting that the second pressure reducing filter valve group 205, the air pressure controller 203 and the exhaust diaphragm valve 202 are connected to form an exhaust control air circuit b.

[0045] Because the steam generated from the air pump 101 contains more impurities and moisture, and has a higher pressure, it is easy to damage the working components if it directly enters the working components in the air path, so the second pressure reducing filter valve group 205 used also has the function of filtering and reducing the pressure of the steam passing through it. When the steam control system is running, the steam is output from the air source component 10 to the exhaust control air path b, and then the steam first enters the second pressure reducing filter valve group 205 for filtering and reducing the pressure, and the steam after filtering and reducing the pressure continues to flow along the exhaust control air path b. A part of the steam enters the first control air port of the air intake diaphragm valve 201 as the execution air source, providing a stable air pressure for the opening change of the exhaust diaphragm valve 202. Another part of the steam first enters the air pressure controller 203 as a reference air source, and is transported to the second control air port of the exhaust diaphragm valve 202 through the air pressure controller 203, so that the two control ports of the exhaust diaphragm valve 202 are ventilated at the same time and a pressure difference is formed between them. The working air port of the exhaust diaphragm valve 202, which is connected in series to the air outlet f of the steam reciprocating pump 100, is opened, and the air outlet f of the steam reciprocating pump 100 is exhausted.

[0046] It is worth noting that the steam drawn from the outlet f of the steam reciprocating pump 100 will also enter the air pressure controller 203, and the air pressure controller 203 will output steam of a specified pressure to the second control air port of the exhaust diaphragm valve 202 according to the steam pressure change at the outlet f of the steam reciprocating pump 100, and control the opening change of the exhaust diaphragm valve 202. Thus, the explosion-proof and safety of the steam reciprocating pump 100 are ensured.

[0047] For example, when the steam pressure at the outlet f of the steam reciprocating pump 100 increases, the steam pressure output by the pressure controller to the second control port of the exhaust diaphragm valve 202 is adjusted to increase, and the pressure difference between the first control port and the second control port of the exhaust diaphragm valve 202 increases, so that the opening of the exhaust diaphragm valve 202 becomes larger, and the exhaust speed of the outlet f of the steam reciprocating pump 100 is accelerated.

[0048] Figure 2 is a gas circuit diagram of a first pressure reducing filter valve group 204 provided in an embodiment of the present disclosure, such as Figure 2 As shown, the first pressure reducing filter valve group 204 includes a first air filter 2041, a first pressure reducing valve 2042 and a first lubricator 2043 which are connected in series in sequence.

[0049] The steam passing through the first pressure reducing filter valve group 204 will first pass through the first air filter 2041 to filter out dust, impurities and moisture from the steam entering the air intake execution path a. The steam then passes through the first pressure reducing valve 2042 to make the pressure of the steam entering the air intake execution path a nearly constant. The steam finally passes through the first oil mist device 2043 to atomize the lubricating oil and inject it into the steam to lubricate various components in the air intake execution path a.

[0050] Figure 3 is a gas circuit diagram of a second pressure reducing filter valve group 205 provided in an embodiment of the present disclosure, such as Figure 3 As shown, the second pressure reducing filter valve assembly 205 includes a second air filter 2051, a second pressure reducing valve 2052 and a second lubricator 2053 which are connected in series in sequence.

[0051] The steam passing through the second pressure reducing filter valve group 205 will first pass through the second air filter 2051 to filter out dust, impurities and moisture from the steam entering the exhaust control gas path b. The steam then passes through the second pressure reducing valve 2052 to make the pressure of the steam entering the exhaust control gas path b nearly constant. The steam finally passes through the second oil mist device 2053 to atomize the lubricating oil and inject it into the steam to lubricate various components in the exhaust control gas path b.

[0052] See again Figure 1 In this embodiment, the control assembly 30 further includes a fourth pressure reducing filter valve assembly 307. The fourth pressure reducing filter valve assembly 307 is connected in series between the air source assembly 10 and the second control air port of the air inlet diaphragm valve 201.

[0053] It is worth noting that the fourth pressure reducing filter valve group 307, the electromagnetic stop valve 305 and the second control air port of the air intake diaphragm valve 201 are connected to form a speed regulating start-stop air circuit c.

[0054] Because the steam generated from the air pump 101 contains more impurities and moisture, and has a higher pressure, it is easy to damage the working components if it directly enters the working components in the air path, so the fourth pressure reducing filter valve group 307 used also has the function of filtering and reducing the pressure of the steam passing therethrough. When the steam is output from the air source component 10 and enters the speed control start-stop air path c, the steam first enters the fourth pressure reducing filter valve group 307 to complete the filtering and reducing the pressure. The steam after filtering and reducing the pressure continues to enter the first control air port of the air intake diaphragm valve 201 along the monitoring air path d as the execution air source. At this time, the first control air port and the second control air port of the air intake diaphragm valve 201 are both ventilated and form a pressure difference between each other. The air intake diaphragm valve 201 connected in series to the air intake port e of the steam reciprocating pump 100 is opened, and the steam enters the steam reciprocating pump 100.

[0055] Figure 4 : is a gas circuit diagram of a fourth pressure reducing filter valve group 307 provided in an embodiment of the present disclosure, such as Figure 4 As shown, in this embodiment, the fourth pressure reducing filter valve group 307 includes a fourth air filter 3071, a fourth pressure reducing valve 3072 and a fourth lubricator 3073 which are sequentially connected in series.

[0056] The steam passing through the fourth pressure reducing filter valve group 307 will first pass through the fourth air filter 3071 to filter out dust, impurities and moisture from the steam entering the speed regulating start-stop gas path c. The steam then passes through the fourth pressure reducing valve 3072 to make the steam pressure entering the speed regulating start-stop gas path c almost constant. The steam finally passes through the fourth oil mist device 3073 to atomize the lubricating oil and inject it into the steam to lubricate various components in the speed regulating start-stop gas path c.

[0057] See again Figure 1 The air source assembly 10 includes an air pump 101 and a first stop valve 102, and the first stop valve 102 is arranged at the air outlet of the air pump 101. The control assembly 30 also includes a second stop valve 308, and the second stop valve 308 is connected in series between the first stop valve 102 and the fourth pressure reducing filter valve assembly 307.

[0058] The first stop valve 102 is set at the air outlet of the air pump 101. The first stop valve 102 controls whether the steam can enter the pump cabin assembly 20 and the control assembly 30. When the first stop valve 102 is closed, the steam cannot enter each gas path, and the steam control system is in a closed state. The second stop valve 308 is connected in series between the first stop valve 102 and the fourth pressure reducing filter valve group 307, that is, the second stop valve 308 can control whether the steam can enter the speed control start and stop gas path c from the air pump 101. When the second stop valve 308 is closed and the first stop valve 102 is opened, the steam can enter the air intake execution gas path a, the exhaust control gas path b and the detection management from the air pump 101, but the steam does not enter the speed control start and stop gas path c. At this time, the steam control system and the steam reciprocating pump 100 are both in a waiting state. When the second stop valve 308 is opened and the first stop valve 102 is also opened, steam can enter the air intake execution air circuit a, the exhaust control air circuit b, the detection management and speed start and stop air circuit c from the air pump 101. At this time, the steam control system and the steam reciprocating pump 100 are both in the starting state, so that the steam reciprocating pump 100 starts to work.

[0059] Therefore, by setting the first stop valve 102 at the air outlet of the air pump 101, and connecting the second stop valve 308 in series between the first stop valve 102 and the fourth pressure reducing filter valve group 307, the steam control system and the steam reciprocating pump 100 can be set to three states: closed, ready to start, and started.

[0060] Continue to see Figure 1 In this embodiment, the control component 30 also includes a mechanical travel switch 302, a pump room muffler 303, a gas-to-electric converter 304, an electromagnetic stop valve 305 and a control panel 306. The switch contact of the mechanical travel switch 302 is connected to the piston rod of the steam reciprocating pump 100, the air inlet of the mechanical travel switch 302 is connected to the air source component 10, and the first working air port of the mechanical travel switch 302 is connected to the air inlet of the pump room muffler 303. The control air port of the gas-to-electric converter 304 is connected to the second working air port of the mechanical travel switch 302. The electromagnetic stop valve 305 is connected in series between the second control air port of the air inlet diaphragm valve 201 and the air source component 10. The control panel 306 is electrically connected to the gas-to-electric converter 304 and the electromagnetic stop valve 305, respectively.

[0061] The steam outputted by the air source assembly 10 enters the air inlet of the mechanical travel switch 302. Because the switch contact of the mechanical travel switch 302 is drivingly connected to the piston rod of the steam reciprocating pump 100, the steam reciprocating pump 100 will hit the switch contact of the mechanical travel switch 302 once every reciprocation.

[0062] When the steam reciprocating pump 100 does not hit the switch contact of the mechanical travel switch 302, the mechanical travel switch 302 is in the left position. Since the second working air port of the mechanical travel switch 302 is connected to the air inlet of the gas-to-electric converter 304, the steam is output to the gas-to-electric converter 304 through the second working air port of the mechanical travel switch 302. At this time, the steam pressure received in the gas-to-electric converter 304 is high pressure, and the gas-to-electric converter 304 is engaged. When the steam reciprocating pump 100 hits the switch contact of the mechanical travel switch 302, the mechanical travel is in the right position after the switch action is performed. Since the first working air port of the mechanical travel switch 302 is connected to the air inlet of the pump room muffler 303, the steam is output to the air inlet of the pump room muffler 303 through the first working air port of the mechanical travel switch 302, and then the steam is discharged to the external environment through the air outlet of the pump room muffler 303. At this time, the steam pressure in the gas-to-electric converter 304 drops to low pressure, and the gas-to-electric converter 304 is disconnected. Whenever the gas-to-electric converter 304 is engaged or disconnected, an electrical signal is sent to the control panel 306, which records and processes the signal to detect the number of reciprocating times per minute of the steam reciprocating pump 100. In addition, the pump room muffler 303 can also reduce the noise when the mechanical travel switch 302 is running.

[0063] Because the electromagnetic stop valve 305 is connected in series between the second control air port of the air intake diaphragm valve 201 and the air source assembly 10, in the speed control start-stop air circuit c, the steam will be transported to the first control air port of the air intake diaphragm valve 201 through the electromagnetic stop valve 305. The electromagnetic stop valve 305 is electrically connected to the control panel 306, so the opening and closing of the electromagnetic stop valve 305 are controlled by the control panel 306.

[0064] Exemplarily, the electromagnetic stop valve 305 is controlled by the control panel 306, and the electromagnetic stop valve 305 is set to open when powered on and close when powered off. When the control panel 306 does not receive the electrical signal from the gas-to-electric converter 304 for a long time, it can be determined that the operation of the steam reciprocating pump 100 is abnormal. At this time, the control panel 306 is powered off, the electromagnetic stop valve 305 is powered off and closed, the speed control start-stop gas path c is disconnected, the air intake diaphragm valve 201 is disconnected, the steam stops entering the steam reciprocating pump 100, and the steam reciprocating pump 100 stops working.

[0065] Because the control panel 306 can monitor the electric signal sent by the gas-to-electric converter 304 to determine whether the operation of the steam reciprocating pump 100 is abnormal, and when the operation of the steam reciprocating pump 100 is abnormal, the control panel 306 controls the closing of the electromagnetic stop valve 305, thereby controlling the steam reciprocating pump 100 to stop working. Therefore, the steam control system can remotely control the start and stop and speed regulation of the steam reciprocating pump 100, thereby enhancing the explosion-proofness and safety of the steam reciprocating pump 100 during operation.

[0066] Continue to see Figure 1 In this embodiment, the pump cabin assembly 20 further includes a third pressure reducing filter valve assembly 206. The third pressure reducing filter valve assembly 206 is connected in series between the air inlet of the mechanical travel switch 302 and the air source assembly 10.

[0067] It is worth noting that the third pressure reducing filter valve group 206, the mechanical travel switch 302, the pump room muffler 303 and the gas-to-electric converter 304 are connected to form a monitoring gas circuit d.

[0068] Because the steam generated from the air pump 101 contains more impurities and moisture, and has a higher pressure, it is easy to damage the working components if it directly enters the working components in the gas path, so the third pressure reducing filter valve group 206 used has the function of filtering and reducing the pressure of the steam passing through it. When the steam is output from the gas source component 10 and enters the monitoring gas path d, the steam first enters the third pressure reducing filter valve group 206 to complete the filtering and reducing pressure treatment. After filtering and reducing pressure, the steam continues to enter the air inlet controlled by the mechanical travel switch 302 along the monitoring gas path d as the execution gas source.

[0069] Figure 5 is a gas circuit diagram of a third pressure reducing filter valve group 206 provided in an embodiment of the present disclosure, such as Figure 5 As shown, in this embodiment, the third pressure reducing filter valve group 206 includes a third air filter 2061, a third pressure reducing valve 2062 and a third lubricator 2063 which are sequentially connected in series.

[0070] The steam passing through the third pressure reducing filter valve group 206 will first pass through the third air filter 2061 to filter out dust, impurities and moisture from the steam entering the monitoring gas path d. The steam then passes through the third pressure reducing valve 2062 to make the pressure of the steam entering the monitoring gas path d nearly constant. The steam finally passes through the third oil mist device 2063 to atomize the lubricating oil and inject it into the steam to lubricate various components in the monitoring gas path d.

[0071] See again Figure 1 In this embodiment, the air source assembly 10 further includes a dryer group 103, a relief valve 104 and an air source muffler 105. The dryer group 103 is connected in series between the air pump 101 and the first stop valve 102. The control air port of the relief valve 104 is connected in parallel with the dryer group 103, and the working air port of the relief valve 104 is connected to the air inlet of the air source muffler 105.

[0072] A dryer group 103 is provided at the air outlet of the air pump 101, thereby delivering dry steam to each air path. The overflow valve 104 is arranged in parallel between the air outlet of the air pump 101 and the air outlet of the dryer group 103. When the total air path pressure of the air source component 10 exceeds the set value of the overflow valve 104, the overflow valve 104 performs overflow pressure relief, and the total air path pressure of the air source component 10 is reduced, thereby ensuring that the total air path pressure in the steam control system does not exceed the set value. The air inlet of the air source muffler 105 is connected to the working air port of the overflow valve 104, and the air outlet of the air source muffler 105 is connected to the external environment, so that the air source muffler 105 can be used to eliminate the noise of the air pump 101, the dryer group 103 and the overflow valve 104 when they are working.

[0073] Exemplarily, the dryer group 103 includes a cooler 1031, a degreaser 1032, an air dryer 1033 and a gas-controlled one-way valve 1034 connected in series, so that the steam generated by the air pump 101 is cooled, degreased and dried when passing through the dryer group 103 to ensure that the steam meets the quality of the driving medium and the control medium. The setting of the gas-controlled one-way valve 1034 prevents the steam sent out of the air source assembly 10 from flowing back.

[0074] Continue to see Figure 1 Exemplarily, the gas source assembly further includes a gas storage tank 106 and a pressure gauge 107 . The gas storage tank 106 is connected in series between the dryer group 103 and the first stop valve 102 . The working gas port of the pressure gauge 107 is connected to the gas storage tank 106 .

[0075] Because the working air port of the pressure gauge 107 is connected to the air tank 106, the pressure gauge 107 can display the pressure in the air tank 106. Because the air tank 106 is connected in series between the dryer group 103 and the first stop valve 102, the pressure in the air tank 106 is the steam pressure entering the pump cabin assembly 20 and the control assembly 30, and can be displayed by the pressure gauge 107, so that the staff can observe the pressure in the total air circuit in real time.

[0076] The above description is only an optional embodiment of the present disclosure and is not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A steam control system, characterized in that: Applied to a steam reciprocating pump (100), the steam control system comprises a gas source component (10), a pump cabin component (20) and a control component (30); The pump cabin assembly (20) comprises an air intake diaphragm valve (201), an air exhaust diaphragm valve (202) and an air pressure controller (203); the first control air port of the air intake diaphragm valve (201) and the first control air port of the air exhaust diaphragm valve (202) are respectively connected to the air source assembly (10); the working air port of the air pressure controller (203) is connected in series between the second control air port of the air exhaust diaphragm valve (202) and the air source assembly (10); the control air port of the air pressure controller (203) is used to be connected in parallel to the exhaust port of the steam reciprocating pump (100); the working air port of the air intake diaphragm valve (201) is used to be connected in series to the air intake port of the steam reciprocating pump (100); and the working air port of the air exhaust diaphragm valve (202) is used to be connected in series to the exhaust port of the steam reciprocating pump (100); The control component (30) comprises a pressure regulating valve (301), and a working air port of the pressure regulating valve (301) is connected in series between a second control air port of the air inlet diaphragm valve (201) and the air source component (10).

2. The steam control system according to claim 1, characterized in that: The pump cabin assembly (20) further comprises a first pressure reducing filter valve assembly (204) and a second pressure reducing filter valve assembly (205); The first pressure reducing filter valve assembly (204) is connected in series between the first control air port of the air inlet diaphragm valve (201) and the air source assembly (10); The second pressure reducing filter valve assembly (205) is connected in series between the first control air port of the exhaust diaphragm valve (202) and the air source assembly (10).

3. The steam control system according to claim 2, characterized in that: The first pressure reducing filter valve group (204) comprises a first air filter (2041), a first pressure reducing valve (2042) and a first oil mist collector (2043) which are sequentially connected in series; The second pressure reducing filter valve group (205) comprises a second air filter (2051), a second pressure reducing valve (2052) and a second lubricator (2053) which are sequentially connected in series.

4. The steam control system according to claim 1, characterized in that: The control assembly (30) further comprises a mechanical travel switch (302), a pump room muffler (303), a gas-to-electric converter (304), an electromagnetic stop valve (305) and a control panel (306); The switch contact of the mechanical travel switch (302) is drivingly connected to the piston rod of the steam reciprocating pump (100), the air inlet of the mechanical travel switch (302) is connected to the air source assembly (10), and the first working air port of the mechanical travel switch (302) is connected to the air inlet of the pump room muffler (303); The control air port of the gas-to-electric converter (304) is in communication with the second working air port of the mechanical travel switch (302); The electromagnetic stop valve (305) is connected in series between the second control air port of the air inlet diaphragm valve (201) and the air source component (10); The control panel (306) is electrically connected to the gas-to-electric converter (304) and the electromagnetic stop valve (305) respectively.

5. The steam control system according to claim 4, characterized in that: The pump cabin assembly (20) further comprises a third pressure reducing filter valve assembly (206); The third pressure reducing filter valve assembly (206) is connected in series between the air inlet of the mechanical travel switch (302) and the air source assembly (10).

6. The steam control system according to claim 5, characterized in that: The third pressure reducing filter valve group (206) comprises a third air filter (2061), a third pressure reducing valve (2062) and a third lubricator (2063) which are sequentially connected in series.

7. The steam control system according to claim 1, characterized in that: The control assembly (30) further comprises a fourth pressure reducing filter valve assembly (307); The fourth pressure reducing filter valve group (307) is connected in series between the air source assembly (10) and the second control air port of the air inlet diaphragm valve (201).

8. The steam control system according to claim 7, characterized in that: The fourth pressure reducing filter valve group (307) comprises a fourth air filter (3071), a fourth pressure reducing valve (3072) and a fourth oil mist collector (3073) which are sequentially connected in series.

9. The steam control system according to claim 7, characterized in that: The air source component (10) comprises an air pump (101) and a first stop valve (102), wherein the first stop valve (102) is arranged at the air outlet of the air pump (101); The control assembly (30) further comprises a second stop valve (308), wherein the second stop valve (308) is connected in series between the first stop valve (102) and the fourth pressure reducing filter valve assembly (307).

10. The steam control system according to claim 9, characterized in that: The air source assembly (10) further comprises a dryer group (103), an overflow valve (104) and an air source muffler (105); The dryer group (103) is connected in series between the air pump (101) and the first stop valve (102); The control air port of the overflow valve (104) is connected in parallel with the dryer group (103), and the working air port of the overflow valve (104) is connected to the air inlet of the air source muffler (105).

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