CN111997948A - Hydraulic sealing unit, oil way, reactor system and denitration catalyst evaluation system - Google Patents
Hydraulic sealing unit, oil way, reactor system and denitration catalyst evaluation system Download PDFInfo
- Publication number
- CN111997948A CN111997948A CN201910446923.2A CN201910446923A CN111997948A CN 111997948 A CN111997948 A CN 111997948A CN 201910446923 A CN201910446923 A CN 201910446923A CN 111997948 A CN111997948 A CN 111997948A
- Authority
- CN
- China
- Prior art keywords
- oil
- valve
- reactor
- port
- hydraulic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8631—Processes characterised by a specific device
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/24—Stationary reactors without moving elements inside
- B01J19/2415—Tubular reactors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/003—Systems with load-holding valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Fluid-Pressure Circuits (AREA)
- Actuator (AREA)
Abstract
The invention relates to the technical field of denitration catalyst evaluation, and discloses a hydraulic sealing unit, an oil way, a reactor system and a denitration catalyst evaluation system. The hydraulic seal unit includes: a piston rod of the sealed oil cylinder is provided with a sealed oil cylinder connecting piece which is used for being connected with a reactor connecting piece of the reactor; the reversing valve comprises an oil inlet P, an oil return port T, an oil port A and an oil port B, one of the oil port A and the oil port B is communicated with the oil inlet P, while the other is communicated with the oil return port T, the oil port A is communicated with a rodless cavity of the sealed oil cylinder through a first pipeline, and the oil port B is communicated with a rod cavity of the sealed oil cylinder through a second pipeline; the first pipeline is provided with a first one-way valve which is connected with a first bypass switch valve in parallel; and a second one-way valve is arranged on the second pipeline and connected with a second bypass switch valve in parallel. The hydraulic sealing unit can ensure that the hydraulic sealing oil path is not always in a working state, greatly shortens the working time of the hydraulic sealing oil path, and improves the service life and the safety performance.
Description
Technical Field
The invention relates to the technical field of denitration catalyst evaluation, in particular to a hydraulic sealing unit, a hydraulic sealing oil way, a reactor system and a denitration catalyst evaluation system.
Background
One of the main atmospheric pollutants, NOx, is the main cause of photochemical smog and acid rain, and is also a difficult problem in the current atmospheric pollution treatment. At present, in the flue gas denitration process of a thermal power plant, a Selective Catalytic Reduction (SCR) method is widely applied due to the advantages of high removal efficiency (which can be more than or equal to 90 percent), no secondary pollution, reliable operation, convenient maintenance and the like. The full-size denitration catalyst evaluation system is used for evaluating key performance indexes such as denitration catalyst activity, denitration efficiency, ammonia escape, SO2/SO3 and pressure drop and guiding the addition, replacement and regeneration of the denitration catalyst.
The denitration catalyst full-scale evaluation system usually adopts a hydraulic sealing device to seal each reactor so as to ensure that good air tightness is kept between the reactors and pipelines at high temperature.
However, in the case of a conventional hydraulic seal device which is operated for a long time and used at a high frequency, the temperature of hydraulic oil in the hydraulic seal is likely to be high, and oil leakage and the like are likely to occur when the hydraulic seal device is used for a long time. In addition, the phenomena of low transmission efficiency and the like are caused under the condition of long-time friction between the piston and the cylinder barrel of the sealed oil cylinder; the abnormal conditions cause that the full-scale evaluation system can not work normally, even air leakage and other phenomena occur during testing, and the physical health of testing personnel is seriously influenced.
Disclosure of Invention
The invention aims to provide a hydraulic sealing unit, which can ensure that a hydraulic sealing oil path is not always in a working state, greatly shorten the working time and improve the service life and the safety performance.
In order to achieve the above object, the present invention provides a hydraulic seal unit including: the piston rod of the sealed oil cylinder is provided with a sealed oil cylinder connecting piece used for being connected with a reactor connecting piece of a reactor; the reversing valve comprises an oil inlet P, an oil return port T, an oil port A and an oil port B, one of the oil port A and the oil port B is communicated with the oil return port T when the other of the oil port A and the oil port B is communicated with the oil inlet P, the oil port A is communicated with a rodless cavity of the sealed oil cylinder through a first pipeline, and the oil port B is communicated with a rod cavity of the sealed oil cylinder through a second pipeline; the first pipeline is provided with a first one-way valve, and the first one-way valve is connected with a first bypass switch valve in parallel; and a second one-way valve is arranged on the second pipeline and connected with a second bypass switch valve in parallel.
Through the technical scheme, because the hydraulic fluid port A of switching-over valve passes through first pipeline intercommunication with the rodless chamber of sealed hydro-cylinder, hydraulic fluid port B passes through the second pipeline intercommunication with the pole chamber of sealed hydro-cylinder, and simultaneously, the first check valve that sets up on the first pipeline is parallelly connected to have first bypass ooff valve, and the second check valve that sets up on the second pipeline is parallelly connected to have second bypass ooff valve, like this, in the in-service use, the sealed hydro-cylinder connecting piece that will seal the hydro-cylinder is connected with the reactor connecting piece of reactor. For example, in one embodiment, the first check valve and the second check valve allow hydraulic oil to flow to the sealed oil cylinder, the oil inlet P and the oil outlet B of the reversing valve are communicated, the oil outlet a and the oil return port T are communicated, the first bypass switch valve is opened, at this time, hydraulic oil enters the rod cavity of the sealed oil cylinder through the second check valve, hydraulic oil in the rodless cavity of the sealed oil cylinder returns through the first bypass switch valve, at this time, the piston rod of the hydraulic oil cylinder drives the reactor to be separated from the pipeline, then a catalyst sample can be loaded, after the loading is completed, the reversing valve is adjusted to enable the oil inlet P and the oil outlet a to be communicated, the oil outlet B and the oil return port T to be communicated, the first bypass switch valve is closed and the second bypass switch valve is opened, at this time, hydraulic oil enters the rodless cavity of the sealed oil cylinder through the first check valve, hydraulic oil in the rod cavity of the sealed, at the moment, a piston rod of the hydraulic oil cylinder drives the reactor to be in sealing connection with the pipeline, then leakage begins to be detected, and after no leakage is detected, the second bypass switch valve is closed. At the moment, the hydraulic oil in the hydraulic sealing oil path is not required to be in a working state all the time, so that the working time of the hydraulic sealing oil path is greatly shortened, the overhigh temperature rise of the hydraulic oil is avoided, and the service life and the safety performance are improved.
Furthermore, be provided with on the first pipeline be located hydraulic fluid port A with the throttling element between the first check valve, the one end of first bypass ooff valve is connected the throttling element with between the first check valve, the other end of first bypass ooff valve is connected first check valve with between the rodless chamber.
Further, the first check valve and the second check valve are arranged to allow hydraulic oil to flow from the seal cylinder to the direction valve;
and/or the presence of a gas in the gas,
the first check valve and the first bypass switching valve are formed as one check bypass switching valve, and the second check valve and the second bypass switching valve are formed as one check bypass switching valve.
Further, the clearance between the outer peripheral surface of the piston of the sealing oil cylinder and the inner peripheral surface of the cylinder barrel of the sealing oil cylinder is 0.6mm-1 mm.
In addition, the application provides a hydraulic seal oil circuit, including hydraulic pump and a plurality of above arbitrary hydraulic seal unit, wherein, hydraulic pump passes through the third pipeline with the oil inlet P of every switching-over valve and is connected.
Therefore, as mentioned above, the hydraulic oil in the hydraulic sealing oil path does not need to be in a working state all the time, thereby greatly shortening the working time of the hydraulic sealing oil path, avoiding the overhigh temperature rise of the hydraulic oil, and improving the service life and the safety performance.
Further, a switch valve is respectively arranged on a third pipeline between the hydraulic pump and the oil inlet P of each reversing valve.
Furthermore, an oil return port T of each reversing valve is sequentially connected with a fine filter and an overflow valve along the oil return direction.
Further, the present application provides a reactor system comprising:
a base joint comprising a first interface, a second interface, and a third interface;
one port of the first reactor is connected to the first interface through a telescopic pipe joint;
one port of the second reactor is connected to the second interface through a telescopic pipe joint;
the first reactor and the second reactor are respectively provided with a reactor connecting piece which is used for being connected with a sealing oil cylinder connecting piece on a piston rod of a sealing oil cylinder.
Therefore, in practical use, the reactor system can be matched with the hydraulic sealing oil circuit for use, so that the first reactor and the second reactor can be connected with the sealing oil cylinder connecting piece on the piston rod of the corresponding sealing oil cylinder through the respective reactor connecting piece respectively, and thus, as the first bypass switch valve and the second bypass switch valve are closed simultaneously, the pressure maintaining effect on the sealing oil cylinder is achieved, the hydraulic oil in the sealing oil cylinder is enabled to be in a static state, the piston in the sealing oil cylinder is balanced with the external expansion force in the reactor, and the sealing of the reactor is enabled to be stable, reliable and complete.
Further, a first switch valve is arranged at the other port of the first reactor; a second switch valve is arranged at the second interface; a third switch valve is arranged at the third interface; and a fourth switch valve is arranged at the other port of the second reactor, wherein the first switch valve, the second switch valve, the third switch valve and the fourth switch valve can be switched on and off, so that the first reactor and the second reactor can be connected in series, in parallel or used independently.
Finally, the present application provides a denitration catalyst evaluation system comprising a control unit, a hydraulic seal oil circuit as described in any of the above, and a reactor system as described in any of the above,
wherein the reactor connecting pieces of the first reactor and the second reactor are connected with the sealing oil cylinder connecting pieces of the first reactor and the second reactor respectively;
the control unit can control the hydraulic sealing oil circuit, so that the first reactor and the second reactor can be driven by the respective sealing oil cylinders to move close to and away from the basic joint.
Thus, as described above, the operational reliability of the denitration catalyst evaluation system is significantly improved.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of a hydraulic seal circuit according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of the seal cylinder of FIG. 1;
FIG. 3 is a schematic diagram of a reactor system according to an embodiment of the present invention.
Description of the reference numerals
1-sealed oil cylinder, 2-reactor connecting piece, 3-sealed oil cylinder connecting piece, 4-reversing valve, 5-first check valve, 6-first bypass switch valve, 7-second check valve, 8-second bypass switch valve, 9-throttling piece, 10-piston, 11-cylinder barrel, 12-hydraulic pump, 13-hydraulic sealing unit, 14-switch valve, 15-fine filter, 16-overflow valve, 17-basic joint, 18-first interface, 19-second interface, 20-third interface, 21-first reactor, 22-second reactor, 23-telescopic pipe section, 24-first switch valve, 25-second switch valve, 26-third switch valve and 27-fourth switch valve.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
Referring to the structure shown in fig. 1, the hydraulic sealing unit 13 provided by the present invention comprises a sealing cylinder 1 and a reversing valve 4, wherein a piston rod of the sealing cylinder 1 is provided with a sealing cylinder connection member 3 for connecting with a reactor connection member 2 of a reactor; the reversing valve 4 comprises an oil inlet P, an oil return port T, an oil port A and an oil port B, one of the oil port A and the oil port B is communicated with the oil inlet P, while the other is communicated with the oil return port T, the oil port A is communicated with a rodless cavity of the sealing oil cylinder 1 through a first pipeline, and the oil port B is communicated with a rod cavity of the sealing oil cylinder 1 through a second pipeline; wherein, the first pipeline is provided with a first one-way valve 5, and the first one-way valve 5 is connected with a first bypass switch valve 6 in parallel; and a second check valve 7 is arranged on the second pipeline, and a second bypass switch valve 8 is connected in parallel with the second check valve 7.
In this solution, the first check valve 5 and the second check valve 7 may allow only hydraulic oil to flow from the direction change valve 4 to the seal cylinder 1, or only hydraulic oil to flow from the seal cylinder 1 to the direction change valve 4, as shown in fig. 1.
Here, the explanation will be given taking as an example that the first check valve 5 and the second check valve 7 can allow only the hydraulic oil to flow from the direction change valve 4 to the seal cylinder 1. Through the technical scheme, because the hydraulic fluid port A of switching-over valve passes through first pipeline intercommunication with the rodless chamber of sealed hydro-cylinder, hydraulic fluid port B passes through the second pipeline intercommunication with the pole chamber of sealed hydro-cylinder, and simultaneously, the first check valve that sets up on the first pipeline is parallelly connected to have first bypass ooff valve, and the second check valve that sets up on the second pipeline is parallelly connected to have second bypass ooff valve, like this, in the in-service use, the sealed hydro-cylinder connecting piece that will seal the hydro-cylinder is connected with the reactor connecting piece of reactor. An oil inlet P of the reversing valve is communicated with an oil port B, the oil port A is communicated with an oil return port T, a first bypass switch valve is opened, at the moment, hydraulic oil enters a rod cavity of the sealed oil cylinder through a second one-way valve, the hydraulic oil in a rodless cavity of the sealed oil cylinder returns oil through the first bypass switch valve, at the moment, a piston rod of the hydraulic oil cylinder drives a reactor to separate from a pipeline, then a catalyst sample can be loaded, after the loading is finished, the reversing valve is adjusted to enable the oil inlet P to be communicated with the oil port A, the oil port B is communicated with the oil return port T, the first bypass switch valve is closed and the second bypass switch valve is opened, at the moment, the hydraulic oil enters the rodless cavity of the sealed oil cylinder through the first one-way valve, the hydraulic oil in the rod cavity of the sealed oil cylinder returns oil through the second bypass switch valve, at the moment, the piston rod, and closing the second bypass switch valve after no leakage is detected, wherein at the moment, the first bypass switch valve and the second bypass switch valve are closed simultaneously to play a pressure maintaining role in the sealed oil cylinder, so that hydraulic oil in the sealed oil cylinder is in a static state, and the piston in the sealed oil cylinder and the external expansion force in the reactor are balanced, so that the reactor is well sealed. At the moment, the hydraulic oil in the hydraulic sealing oil path is not required to be in a working state all the time, so that the working time of the hydraulic sealing oil path is greatly shortened, the overhigh temperature rise of the hydraulic oil is avoided, and the service life and the safety performance are improved.
Further, as shown in fig. 1, a throttling member 9 is disposed on the first pipeline between the oil port a and the first check valve 5, one end of the first bypass switch valve 6 is connected between the throttling member 9 and the first check valve 5, and the other end of the first bypass switch valve 6 is connected between the first check valve 5 and the rodless chamber. In this way, by the throttling regulating effect of the throttling member 9, such as a throttle valve or a throttle orifice, on the hydraulic oil, the movement speed of the piston of the seal cylinder 1 can be correspondingly regulated, thereby making the movement of the reactor smoother.
In addition, as described above, alternatively, the first check valve 5 and the second check valve 7 are provided for allowing the hydraulic oil to flow from the seal cylinder 1 to the direction change valve 4, or the first check valve 5 and the second check valve 7 may allow only the hydraulic oil to flow from the direction change valve 4 to the seal cylinder 1;
and/or, as shown in fig. 1, the check valve and the corresponding bypass switching valve may be two valves independent of each other, or, alternatively, the check valve and the corresponding bypass switching valve may be formed as one-way bypass switching valve, that is, the first check valve 5 and the first bypass switching valve 6 are formed as one-way bypass switching valve, and the second check valve 7 and the second bypass switching valve 8 are formed as one-way bypass switching valve. Thereby simplifying the piping connection.
Further, as shown in fig. 2, the clearance between the outer peripheral surface of the piston 10 of the seal cylinder 1 and the inner peripheral surface of the cylinder tube 11 of the seal cylinder 1 is 0.5mm to 1mm, preferably 0.6mm to 1mm, more preferably 0.7mm, 0.8mm, or 0.9 mm. For example, in one embodiment, the piston has a dimension of 500mm with a deviation of (-0.3mm, -0.5mm), and the bore has an inner diameter of 500mm with a deviation of (+0.3mm, +0.5 mm). Thus, the transmission efficiency can be improved by 50 to 60 percent.
In addition, as shown in fig. 1, the present application provides a hydraulic seal oil path including a hydraulic pump 12 and a plurality of hydraulic seal units 13 as described above, wherein the hydraulic pump 12 is connected to the oil inlet P of each selector valve 4 through a third line.
Thus, as described above, after the first bypass switching valve and the second bypass switching valve are closed at the same time, the hydraulic pump 12 is stopped, so that the hydraulic oil in the hydraulic seal oil path does not need to be in a working state all the time, thereby greatly shortening the working time thereof, preventing the temperature of the hydraulic oil from being excessively high, and improving the service life and the safety performance.
Further, as shown in fig. 1, a switching valve 14 is respectively disposed on a third pipeline between the hydraulic pump 12 and the oil inlet P of each directional control valve 4, so that the switching valve 14 can be closed to prevent the hydraulic pump 12 from operating to deliver hydraulic oil to the seal cylinder 1 after the first bypass switching valve and the second bypass switching valve are closed simultaneously.
Further, as shown in fig. 1, a fine filter 15 and a relief valve 16 are connected to the oil return port T of each selector valve 4 in this order in the oil return direction. The filter fineness of the fine filter 15 can be 5um to impurity that probably brings in the sealed hydro-cylinder 1 filters, thereby reaches the effect that increases the hydraulic seal oil circuit life, and the effect of overflow valve 16 is too big for preventing the pressure in return circuit in the hydraulic seal oil circuit, guarantees that hydraulic oil normally operates in the return circuit.
In addition, as shown in fig. 1, the oil inlet of the hydraulic pump 12 is connected with a coarse filter, the filtering precision of the coarse filter can be 20um, and the hydraulic oil is filtered. The outlet of the hydraulic pump 12 is connected with the inlet of the switch valve 14 through a pressure gauge, and the pressure gauge reflects the real-time pressure value of the outlet of the oil tank.
Further, the first bypass opening/closing valve 6, the second bypass opening/closing valve 8, and the opening/closing valve 14 may be electrically operated valves.
Furthermore, the present application provides a reactor system, as shown in fig. 3, comprising a base connection 17, a first reactor 21 and a second reactor 22, wherein the base connection 17 comprises a first interface 18, a second interface 19 and a third interface 20; one port of the first reactor 21 is connected to the first port 18 through a telescopic pipe joint 23; one port of the second reactor 22 is connected to the second port 19 through a telescopic pipe joint 23; wherein the first reactor 21 and the second reactor 22 are respectively provided with a reactor connecting piece 2 for connecting with a sealing cylinder connecting piece 3 on a piston rod of a sealing cylinder 1.
Like this, in the in-service use, this reactor system can with above arbitrary hydraulic seal oil circuit supporting use for first reactor and second reactor can be connected with the sealed hydro-cylinder connecting piece on the piston rod of the sealed hydro-cylinder that corresponds separately through respective reactor connecting piece respectively, and like this, sealed hydro-cylinder can drive the reactor of connecting separately and pass through telescopic pipe festival axial displacement, simultaneously, because first bypass ooff valve and second bypass ooff valve close simultaneously, in order to play the pressurize effect to sealed hydro-cylinder, make hydraulic oil in the sealed hydro-cylinder will be in static state, the piston in the sealed hydro-cylinder reaches the equilibrium with the external expansive force in the reactor, thereby make the reactor sealed firm reliable intact.
Further, as shown in fig. 3, a first on-off valve 24 is provided at the other port of the first reactor 21; a second switch valve 25 is arranged at the second interface 19; a third on-off valve 26 is arranged at the third interface 20; a fourth switch valve 27 is arranged at the other port of the second reactor 22, wherein the first switch valve 24, the second switch valve 25, the third switch valve 26 and the fourth switch valve 27 can be switched on and off according to the actual use requirement, so that the first reactor 21 and the second reactor 22 can be connected in series, connected in parallel or used independently. Therefore, the reactor system can be used in a variety of ways according to actual needs, for example, the first switch valve 24, the second switch valve 25, the third switch valve 26 and the fourth switch valve 27 are used for controlling the on-off of the pipeline, and the first reactor 21 and the second reactor 22 can be connected in series or in parallel, or can be used independently. When the first switch valve 24, the second switch valve 25, the fourth switch valve 27 are opened and the third switch valve 26 is closed, the first reactor 21 and the second reactor 22 are connected in series; when the first switch valve 24, the third switch valve 26, the fourth switch valve 27 are opened and the second switch valve 25 is closed, the first reactor 21 and the second reactor 22 are connected in parallel; when the first switching valve 24 and the third switching valve 26 are opened and the second switching valve 25 and the fourth switching valve 27 are closed, the first reactor 21 is used alone; when the second and fourth switching valves 25 and 27 are opened and the first and third switching valves 24 and 26 are closed, the second reactor 22 is used alone. Therefore, continuous testing of catalyst samples under different working conditions can be realized without stopping the machine, so that the working efficiency is improved, and the testing cost is saved.
Further, the present application provides a denitration catalyst evaluation system including a control unit, a hydraulic seal oil path as described in any of the above, and a reactor system 28 as described in any of the above,
wherein, the reactor connecting pieces 2 of the first reactor 21 and the second reactor 22 are connected with the sealing oil cylinder connecting pieces 3 respectively;
wherein the control unit can control the hydraulic sealing oil circuit, so that the first reactor 21 and the second reactor 22 can move close to and away from the base joint 17 under the driving of the respective sealing oil cylinder 1.
Thus, as described above, the operational reliability of the denitration catalyst evaluation system is significantly improved.
The control unit may include a PLC module and a power supply. The control unit is respectively connected with the hydraulic pump, each electric valve and the reversing valve through signal lines, so that the positions of the first reactor 21 and the second reactor 22 are adjusted, and the sealed oil cylinder achieves the pressure maintaining effect. In addition, the PLC module can be connected with the display screen, and the work of hydraulic sealing oil circuit is remotely controlled through a computer.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. The invention is not described in detail in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (10)
1. A hydraulic seal unit, comprising:
the device comprises a sealed oil cylinder (1), wherein a piston rod of the sealed oil cylinder (1) is provided with a sealed oil cylinder connecting piece (3) which is used for being connected with a reactor connecting piece (2) of a reactor;
the reversing valve (4) comprises an oil inlet P, an oil return port T, an oil port A and an oil port B, one of the oil port A and the oil port B is communicated with the oil inlet P, the other oil port is communicated with the oil return port T, the oil port A is communicated with a rodless cavity of the sealed oil cylinder (1) through a first pipeline, and the oil port B is communicated with a rod cavity of the sealed oil cylinder (1) through a second pipeline;
wherein the content of the first and second substances,
a first check valve (5) is arranged on the first pipeline, and a first bypass switch valve (6) is connected in parallel with the first check valve (5);
and a second one-way valve (7) is arranged on the second pipeline, and a second bypass switch valve (8) is connected in parallel with the second one-way valve (7).
2. The hydraulic sealing unit of claim 1, characterized in that a throttle (9) is arranged on the first line between the oil port a and the first check valve (5), one end of the first bypass on-off valve (6) is connected between the throttle (9) and the first check valve (5), and the other end of the first bypass on-off valve (6) is connected between the first check valve (5) and the rodless chamber.
3. The hydraulic sealing unit according to claim 1 or 2, characterized in that the first non return valve (5) and the second non return valve (7) are arranged for allowing hydraulic oil to flow from the sealing cylinder (1) to the reversing valve (4);
and/or the presence of a gas in the gas,
the first check valve (5) and the first bypass opening/closing valve (6) are formed as one-way bypass opening/closing valve, and the second check valve (7) and the second bypass opening/closing valve (8) are formed as one-way bypass opening/closing valve.
4. The hydraulic sealing unit according to claim 1, characterized in that the clearance between the outer circumferential surface of the piston (10) of the sealing cylinder (1) and the inner circumferential surface of the bore (11) of the sealing cylinder (1) is 0.6mm-1 mm.
5. Hydraulic sealing circuit, characterized in that it comprises a hydraulic pump (12) and a plurality of hydraulic sealing units (13) according to any one of claims 1-4, wherein,
the hydraulic pump (12) is connected with an oil inlet P of each reversing valve (4) through a third pipeline.
6. The hydraulic sealing oil circuit according to claim 5, characterized in that a switch valve (14) is respectively arranged on a third pipeline between the hydraulic pump (12) and the oil inlet P of each reversing valve (4).
7. The hydraulic sealing oil circuit according to claim 5 or 6, characterized in that the oil return port T of each reversing valve (4) is connected with a fine filter (15) and an overflow valve (16) in sequence along the oil return direction.
8. A reactor system, comprising:
a base joint (17), the base joint (17) comprising a first interface (18), a second interface (19) and a third interface (20);
a first reactor (21), one port of the first reactor (21) being connected at the first interface (18) by a telescopic pipe joint (23);
a second reactor (22), one port of the second reactor (22) being connected at the second interface (19) by a telescopic pipe joint (23);
the first reactor (21) and the second reactor (22) are respectively provided with a reactor connecting piece (2) which is used for being connected with a sealing oil cylinder connecting piece (3) on a piston rod of a sealing oil cylinder (1).
9. A reactor system according to claim 8, wherein a first on-off valve (24) is provided at the other port of the first reactor (21);
a second switch valve (25) is arranged at the second interface (19);
a third switch valve (26) is arranged at the third interface (20);
a fourth switch valve (27) is arranged at the other port of the second reactor (22);
wherein the first, second, third and fourth on-off valves (24, 25, 26, 27) are switchable to enable the first and second reactors (21, 22) to be used in series, in parallel or separately.
10. A denitration catalyst evaluation system comprising a control unit, the hydraulically sealed oil circuit according to any one of claims 5 to 7, and the reactor system (28) according to claim 8 or 9,
wherein the reactor connecting pieces (2) of the first reactor (21) and the second reactor (22) are connected with the sealing oil cylinder connecting pieces (3);
the control unit can control the hydraulic sealing oil circuit, so that the first reactor (21) and the second reactor (22) can move close to and away from the base joint (17) under the driving of the respective sealing oil cylinders (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910446923.2A CN111997948B (en) | 2019-05-27 | 2019-05-27 | Hydraulic sealing unit, oil way, reactor system and denitration catalyst evaluation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910446923.2A CN111997948B (en) | 2019-05-27 | 2019-05-27 | Hydraulic sealing unit, oil way, reactor system and denitration catalyst evaluation system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111997948A true CN111997948A (en) | 2020-11-27 |
| CN111997948B CN111997948B (en) | 2022-10-11 |
Family
ID=73461353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910446923.2A Active CN111997948B (en) | 2019-05-27 | 2019-05-27 | Hydraulic sealing unit, oil way, reactor system and denitration catalyst evaluation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111997948B (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2312523A1 (en) * | 1999-06-28 | 2000-12-28 | Pierre Toutant | Automatic multi-reactor method and device for evaluating catalysts with a heavy load |
| CN101312783A (en) * | 2005-11-22 | 2008-11-26 | 倪泰克解决方案有限公司 | Improved apparatus and method for temperature controlled processes |
| CN201346461Y (en) * | 2008-12-02 | 2009-11-18 | 常州市宝丽胶粘剂有限公司 | Jacketed type grading heating device |
| CN102560152A (en) * | 2012-01-18 | 2012-07-11 | 深圳市新星轻合金材料股份有限公司 | Reaction device for producing titanium sponge |
| CN202628637U (en) * | 2012-07-05 | 2012-12-26 | 中联重科股份有限公司 | Hydraulic control system of pendular oil cylinder with supporting leg, and supporting leg of engineering machinery |
| CN103291672A (en) * | 2013-05-29 | 2013-09-11 | 中国神华能源股份有限公司 | Ship loader and hydraulic slide tube straightening system thereof |
| CN103758805A (en) * | 2013-12-27 | 2014-04-30 | 北京市三一重机有限公司 | Main pushing hydraulic system and tube push bench |
| US20140350182A1 (en) * | 2011-12-14 | 2014-11-27 | Commonwealth Scientique And Industrial Research Organisation | Raft polymers |
| CN204380693U (en) * | 2015-01-07 | 2015-06-10 | 山东成泰化工有限公司 | For the nitrogen-sealed shearing device of reactor catalyst regeneration |
| CN106396309A (en) * | 2016-11-09 | 2017-02-15 | 河南工程学院 | Transverse electroosmosis sludge in-depth dewatering experiment device and experiment method thereof |
| CN106596832A (en) * | 2016-06-02 | 2017-04-26 | 华纳创新（北京）科技有限公司 | SCR denitration catalyst evaluation device |
| CN206519163U (en) * | 2017-03-04 | 2017-09-26 | 广东石油化工学院 | A kind of modified pitch integrated reactor |
| CN206645984U (en) * | 2017-03-24 | 2017-11-17 | 河南工程学院 | Transfer electron formula electro-osmosis advanced oxidation sludge dewatering system |
| CN109126672A (en) * | 2018-09-18 | 2019-01-04 | 汤美侠 | A kind of Chemical Manufacture liquid phase hydrogenation reactor |
| CN109682923A (en) * | 2018-12-17 | 2019-04-26 | 中国科学院过程工程研究所 | A kind of full-scale SCR denitration evaluation system and method |
-
2019
- 2019-05-27 CN CN201910446923.2A patent/CN111997948B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2312523A1 (en) * | 1999-06-28 | 2000-12-28 | Pierre Toutant | Automatic multi-reactor method and device for evaluating catalysts with a heavy load |
| CN101312783A (en) * | 2005-11-22 | 2008-11-26 | 倪泰克解决方案有限公司 | Improved apparatus and method for temperature controlled processes |
| US20090304890A1 (en) * | 2005-11-22 | 2009-12-10 | Xiongwei Ni | apparatus and method for temperature controlled processes |
| CN201346461Y (en) * | 2008-12-02 | 2009-11-18 | 常州市宝丽胶粘剂有限公司 | Jacketed type grading heating device |
| US20140350182A1 (en) * | 2011-12-14 | 2014-11-27 | Commonwealth Scientique And Industrial Research Organisation | Raft polymers |
| CN102560152A (en) * | 2012-01-18 | 2012-07-11 | 深圳市新星轻合金材料股份有限公司 | Reaction device for producing titanium sponge |
| CN202628637U (en) * | 2012-07-05 | 2012-12-26 | 中联重科股份有限公司 | Hydraulic control system of pendular oil cylinder with supporting leg, and supporting leg of engineering machinery |
| CN103291672A (en) * | 2013-05-29 | 2013-09-11 | 中国神华能源股份有限公司 | Ship loader and hydraulic slide tube straightening system thereof |
| CN103758805A (en) * | 2013-12-27 | 2014-04-30 | 北京市三一重机有限公司 | Main pushing hydraulic system and tube push bench |
| CN204380693U (en) * | 2015-01-07 | 2015-06-10 | 山东成泰化工有限公司 | For the nitrogen-sealed shearing device of reactor catalyst regeneration |
| CN106596832A (en) * | 2016-06-02 | 2017-04-26 | 华纳创新（北京）科技有限公司 | SCR denitration catalyst evaluation device |
| CN106396309A (en) * | 2016-11-09 | 2017-02-15 | 河南工程学院 | Transverse electroosmosis sludge in-depth dewatering experiment device and experiment method thereof |
| CN206519163U (en) * | 2017-03-04 | 2017-09-26 | 广东石油化工学院 | A kind of modified pitch integrated reactor |
| CN206645984U (en) * | 2017-03-24 | 2017-11-17 | 河南工程学院 | Transfer electron formula electro-osmosis advanced oxidation sludge dewatering system |
| CN109126672A (en) * | 2018-09-18 | 2019-01-04 | 汤美侠 | A kind of Chemical Manufacture liquid phase hydrogenation reactor |
| CN109682923A (en) * | 2018-12-17 | 2019-04-26 | 中国科学院过程工程研究所 | A kind of full-scale SCR denitration evaluation system and method |
Non-Patent Citations (1)
| Title |
|---|
| 王卓等: "烟气脱硫集散监控系统的研究与应用", 《自动化与仪表》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111997948B (en) | 2022-10-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103370546B (en) | For to having the hydraulic pressure or pneumatic driving device that the valve of adjusting or distributing valve manipulated | |
| CN101936857B (en) | Confining pressure keeping system of rock triaxial creep testing machine | |
| RU2009122172A (en) | HYDRAULIC STATION | |
| CN207848070U (en) | A kind of automobile brake oil pipe testing machine | |
| CN112324759A (en) | Shield machine oil tank water cooling system and shield machine oil tank water cooling control method | |
| CN111997948B (en) | Hydraulic sealing unit, oil way, reactor system and denitration catalyst evaluation system | |
| CN215927974U (en) | Full-bridge valve core and hydraulic system | |
| CN214617250U (en) | Pump-controlled double-acting hydraulic actuator | |
| CN116066445A (en) | Balance type leakless low friction hydraulic cylinder | |
| RU2122875C1 (en) | Fire extinguishing apparatus | |
| CN213982231U (en) | Valve actuating system | |
| CN213575657U (en) | Slurry discharge valve suitable for coal mine paste filling | |
| CN110217407B (en) | Test device of hydraulic actuator cylinder | |
| CN202326527U (en) | Closed hydraulic loop and concrete pumping equipment | |
| CN112901572A (en) | Pump-controlled double-acting hydraulic actuator | |
| CN86107785A (en) | Motor seal protector valve | |
| CN109654255A (en) | A kind of two-way pilot-operated type pressure-regulating valve | |
| CN113915176B (en) | Automatic control hydraulic system for driving power device | |
| RU2296884C2 (en) | Submersible hydraulic pumping unit | |
| CN114738524B (en) | Differential pressure type three-way valve | |
| RU2378549C1 (en) | Koskinen cylindrical valve | |
| CN216064664U (en) | Pressure test purging equipment | |
| CN221033408U (en) | Hydraulic cylinder without external oil pipe | |
| CN220540334U (en) | Fluid diversion opposite-flushing valve cage and water supply recycling regulating valve | |
| CN216554752U (en) | Hydraulic power unit of mobile equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 100011 Beijing Dongcheng District, West Binhe Road, No. 22 Applicant after: CHINA ENERGY INVESTMENT Corp.,Ltd. Applicant after: Beijing low carbon clean energy Research Institute Address before: 100011 Beijing Dongcheng District, West Binhe Road, No. 22 Applicant before: CHINA ENERGY INVESTMENT Corp.,Ltd. Applicant before: NATIONAL INSTITUTE OF CLEAN-AND-LOW-CARBON ENERGY |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |