Valve detection tool of oil-gas separator

Abstract

The utility model belongs to the technical field of valve detection, and particularly relates to a valve detection tool of an oil-gas separator, which comprises a detection table, a limiting seat and a limiting mechanism, and the oil-gas separator is provided with a manifold end one-way valve, an air filter end one-way valve, an oil return valve and a gulp valve; the detection mechanism comprises a controller, an air compressor, a main air inlet pipe, a flow meter, a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve and a fourth electromagnetic valve; an air compressor is communicated with a flow instrument through a main air inlet pipe, and an output port of the flow instrument is communicated with a first air conveying pipe, a second air conveying pipe, a third air conveying pipe and a fourth air conveying pipe and communicated to air inlets of a manifold end one-way valve, an air filter end one-way valve, an oil return valve and an air supply valve. And the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve and the fourth electromagnetic valve are respectively arranged on the first gas conveying pipe, the second gas conveying pipe, the third gas conveying pipe and the fourth gas conveying pipe. According to the scheme, a plurality of valves on the oil-gas separator can be independently detected.

Description

TECHNICAL FIELD

[0001] The utility model belongs to valve detection technical field, concretely relates to a valve detection frock of oil gas separator. BACKGROUND

[0002] In modern engine systems, oil gas separators play a crucial role, which can effectively separate lubricating oil mist from the crankcase ventilation gas, thereby preventing lubricating oil from being discharged with exhaust gas and reducing harmful emissions. In order to ensure the efficient operation of the oil gas separator, a plurality of key valves are provided inside, including manifold end check valve, air filter end check valve, oil return valve and air supplement valve. The design and manufacturing quality of these valves directly affect the overall performance and reliability of the oil gas separator.

[0003] However, in the actual production process, when the oil gas separator is welded into an assembly, it is difficult to detect the leakage of each valve separately due to the complexity of the structure and physical limitations. This limitation may lead to potential leakage problems in some valves that cannot be discovered in time, thereby affecting the normal operation and service life of the entire system, and the key valves (i.e. manifold end check valve, air filter end check valve, oil return valve and air supplement valve) on the oil gas separator need to be detected before welding. UTILITY MODEL CONTENT

[0004] In order to solve the above technical problems, the utility model provides a valve detection frock of oil gas separator to solve the problem that it is difficult to detect the leakage of each valve separately when the oil gas separator is welded into an assembly. This limitation may lead to potential leakage problems in some valves that cannot be discovered in time.

[0005] The utility model adopts the technical scheme as follows: a valve detection frock of oil gas separator, including detection table, be provided with the limit seat on the detection table, be provided with the limiting mechanism on the limit seat, for limiting oil gas separator, be provided with manifold end check valve, air filter end check valve, oil return valve and air supplement valve on the oil gas separator;

[0006] Detection mechanism, the detection mechanism includes controller, air compressor, total inlet pipe, flow instrument, first electromagnetic valve, second electromagnetic valve, third electromagnetic valve and fourth electromagnetic valve;

[0007] The air compressor, flow instrument, first electromagnetic valve, second electromagnetic valve, third electromagnetic valve and fourth electromagnetic valve are electrically connected with the controller;

[0008] The air compressor is communicated with the flow meter through a total inlet pipe, and the output port of the flow meter is respectively communicated with a first gas conveying pipe, a second gas conveying pipe, a third gas conveying pipe and a fourth gas conveying pipe.

[0009] Further, the oil-gas separator comprises an upper shell and a lower shell, the manifold end check valve and the air filter end check valve are arranged on the upper shell, and the oil return valve and the air supplement valve are arranged on the lower shell, and the upper shell and the lower shell are spaced apart and installed on a limiting seat.

[0010] The limiting mechanism comprises an upper limiting assembly for limiting the upper shell and a lower limiting assembly for limiting the lower shell.

[0011] Further, the upper limiting assembly comprises a rotary air cylinder, a limiting column and a positioning column.

[0012] A positioning hole is formed in the upper shell, the limiting column is fixedly installed on the upper surface of the limiting seat, and the positioning hole can vertically slide through the limiting column;

[0013] Limiting grooves are respectively formed in the left and right outer side walls of the upper shell, the limiting column is provided with two limiting grooves corresponding to the two limiting grooves and is respectively located on the left and right sides of the limiting column, and the limiting column can abut on the limiting grooves.

[0014] The rotary air cylinder is installed on the limiting seat and located at the rear side of the positioning column, the driving end of the rotary air cylinder is located above the limiting seat and connected with a pressing block, and the rotary air cylinder can drive the pressing block to abut on the upper surface of the upper shell.

[0015] The rotary air cylinder is electrically connected with the controller.

[0016] Further, a first installation groove is formed in the limiting seat corresponding to the positions of the manifold end check valve and the air filter end check valve of the upper shell, a rubber pad is arranged in the first installation groove, and the upper surface of the rubber pad is flush with the upper surface of the limiting seat.

[0017] The first and second pipeline connecting seats are communicated with the first and second gas conveying pipes respectively, first and second air inlet channels are arranged on the limiting seat corresponding to the manifold end one-way valve and the air filter end one-way valve, the air inlet ends of the first and second air inlet channels are communicated with the air outlet ends of the first and second pipeline connecting seats respectively, the first and second air inlet channels are separated and distributed along the front and back directions of the limiting seat, first and second air conveying channels are vertically arranged on the limiting seat, first and second air permeable holes are vertically arranged on the rubber pad corresponding to the first and second air conveying channels, the first and second air permeable holes are communicated with the first and second air conveying channels respectively, the first air conveying channel is communicated with the upper side of the first air inlet channel, the upper end of the first air conveying channel is communicated with the air inlet of the manifold end one-way valve through the first air permeable hole, the second air conveying channel is communicated with the upper side of the second air inlet channel, and the upper end of the second air conveying channel is communicated with the air inlet of the air filter end one-way valve through the second air permeable hole.

[0018] Further, the lower limiting assembly comprises a mounting frame, a telescopic air cylinder, a mounting plate, a first limiting block, a second limiting block, a limiting cylinder and a pressing seat.

[0019] A clamping groove is arranged on the right side wall of the lower shell, the first and second limiting blocks are fixedly installed on the upper surface of the limiting seat in a spaced manner along the left and right directions of the limiting seat, the first limiting block can abut against the left side wall of the lower shell, and the second limiting block can be clamped in the clamping groove of the lower shell.

[0020] The lower shell is provided with an oil return cylinder, the oil return valve is arranged on the oil return cylinder, the lower shell is provided with a gas supplement cavity, the gas supplement valve is arranged in the gas supplement cavity, the mounting frame is fixedly installed on the limiting seat, the telescopic air cylinder is vertically installed on the mounting frame, the driving end of the telescopic air cylinder is vertically downward and fixedly connected with the upper surface of the mounting plate, the limiting cylinder and the pressing seat are fixedly installed on the lower surface of the mounting plate in a position corresponding to the oil return cylinder and the gas supplement cavity, the limiting cylinder and the pressing seat are both hollow, the limiting cylinder can be sleeved on the oil return cylinder, and the pressing seat can abut against the top of the gas supplement cavity, so that the gas supplement cavity is in a sealed state.

[0021] The telescopic air cylinder is electrically connected with the controller.

[0022] Further, the limiting cylinder and the pressing seat are respectively communicated with third and fourth pipeline connecting seats, and the third and fourth pipeline connecting seats are respectively communicated with third and fourth gas conveying pipes.

[0023] The inner peripheral wall of the limiting cylinder is fixedly connected with a rubber cylinder, the inner peripheral wall of the rubber cylinder can be tightly attached to the outer peripheral wall of the oil return cylinder, and the limiting cylinder is communicated with the air inlet of the oil return valve through the oil return cylinder.

[0024] Further, the air compressor and the flow meter are communicated with a pressure regulating valve.

[0025] The beneficial effects of the utility model are as follows: before the oil-gas separator is welded, the compressed air flow to the manifold end check valve, the air filter end check valve, the oil return valve and the air supplement valve is respectively controlled through the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve and the fourth electromagnetic valve, and the independent detection of each valve is realized through the flow meter, the utility model can accurately identify which valve has a leakage problem, and the precision of fault positioning is improved; the tooling adjusts the air pressure entering the system to simulate the actual working condition of the oil-gas separator, and ensures the authenticity and effectiveness of the detection result. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is the overall structure schematic view of the utility model;

[0027] Figure 2 It is the structure schematic view (the first visual angle) of the limiting seat, the limiting mechanism and the oil-gas separator in the utility model;

[0028] Figure 3 It is the structure schematic view (the second visual angle) of the limiting seat, the limiting mechanism and the oil-gas separator in the utility model;

[0029] Figure 4 It is the structure schematic view of the limiting seat and the limiting mechanism in the utility model;

[0030] Figure 5 It is the partial structure schematic view of the mounting frame in the utility model;

[0031] Figure 6 It is the split structure schematic view of the oil-gas separator in the utility model;

[0032] Figure 7 It is the partial structure schematic view of the oil-gas separator after splitting in the utility model;

[0033] Figure 8 It is the partial sectional view (the first visual angle) of the limiting seat in the utility model;

[0034] Figure 9It is partial sectional view (second visual angle) of the limiting seat in the utility model;

[0035] The accompanying drawings are as follows:

[0036] Detection table 1, limiting seat 2, first installation groove 201, rubber pad 202, first pipeline connecting seat 203, second pipeline connecting seat 204, first air inlet 205, second air inlet 206, first air conveying passage 207, second air conveying passage 208, first air permeable hole 209, second air permeable hole 210, limiting mechanism 3, rotary air cylinder 301, pressing block 302, limiting column 303, positioning column 304, mounting frame 305, telescopic air cylinder 306, mounting plate 307, first limiting block 308, second limiting block 309, limiting cylinder 310, lower pressing seat 311, third pipeline connecting seat 312, fourth pipeline connecting seat 313, rubber cylinder 314, rubber block 315, third air permeable hole 316, oil-gas separator 4, upper shell 401, lower shell 402, manifold end one-way valve 403, air filter end one-way valve 404, oil return valve 405, air supplement valve 406, positioning hole 407, limiting groove 408, clamping groove 409, oil return cylinder 410, air supplement cavity 411, detection mechanism 5, controller 501, air compressor 502, total air inlet pipe 503, pressure regulating valve 504, flow meter 505, first air conveying pipe 506, second air conveying pipe 507, third air conveying pipe 508, fourth air conveying pipe 509, first electromagnetic valve 510, second electromagnetic valve 511, third electromagnetic valve 512, fourth electromagnetic valve 513. DETAILED DESCRIPTION

[0037] The embodiments of the utility model will be further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but cannot be used to limit the scope of the utility model.

[0038] In the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more than two; The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore, it cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0039] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, term "link", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through intermediate medium.

[0040] Embodiment 1

[0041] As Figures 1-9 The valve detection tool of the oil-gas separator includes a detection table 1, a limiting seat 2 is arranged on the detection table 1, a limiting mechanism 3 is arranged on the limiting seat 2, and the limiting mechanism 3 is used for limiting an oil-gas separator 4, the oil-gas separator 4 is provided with a manifold end one-way valve 403, an air filter end one-way valve 404, an oil return valve 405 and a gas supplement valve 406.

[0042] A detection mechanism 5, the detection mechanism 5 includes a controller 501, an air compressor 502, a total air inlet pipe 503, a flow meter 505, a first electromagnetic valve 510, a second electromagnetic valve 511, a third electromagnetic valve 512 and a fourth electromagnetic valve 513;The air compressor 502 is arranged on the outer side of the detection table 1.

[0043] The air compressor 502, the flow meter 505, the first electromagnetic valve 510, the second electromagnetic valve 511, the third electromagnetic valve 512 and the fourth electromagnetic valve 513 are electrically connected with the controller 501;

[0044] The air compressor 502 is communicated with the flow meter 505 through the total air inlet pipe 503, and the output port of the flow meter 505 is respectively communicated with a first gas inlet pipe 506, a second gas inlet pipe 507, a third gas inlet pipe 508 and a fourth gas inlet pipe 509, the first gas inlet pipe 506, the second gas inlet pipe 507, the third gas inlet pipe 508 and the fourth gas inlet pipe 509 are respectively communicated to the air inlet of the manifold end one-way valve 403, the air filter end one-way valve 404, the oil return valve 405 and the gas supplement valve 406, specifically, the first gas inlet pipe 506 is communicated to the air inlet of the manifold end one-way valve 403, the second gas inlet pipe 507 is communicated to the air inlet of the air filter end one-way valve 404, the third gas inlet pipe 508 is communicated to the air inlet of the oil return valve 405, and the fourth gas inlet pipe 509 is communicated to the air inlet of the gas supplement valve 406;The first electromagnetic valve 510, the second electromagnetic valve 511, the third electromagnetic valve 512 and the fourth electromagnetic valve 513 are respectively arranged on the first gas inlet pipe 506, the second gas inlet pipe 507, the third gas inlet pipe 508 and the fourth gas inlet pipe 509.

[0045] As a preferred scheme, Figure 1The air compressor 502 and the flow meter 505 are communicated with a pressure regulating valve 504. In the embodiment, the controller 501 is a single-chip microcomputer, preferably an STM32H series high-performance single-chip microcomputer. The detection mechanism 5 further comprises a display and an alarm. The display is arranged on the detection table 1 and is electrically connected with the controller 501. The controller 501 is configured to control the display content of the display according to the opening and closing conditions of the first electromagnetic valve 510, the second electromagnetic valve 511, the third electromagnetic valve 512 and the fourth electromagnetic valve 513 and the detection result of the flow meter 505. The controller 501 is further configured to control the opening and closing of the alarm according to the detection result of the flow meter 505. The controller 501 controls the opening and closing of the air compressor 502, the pressure regulating valve 504, the flow meter 505, the first electromagnetic valve 510, the second electromagnetic valve 511, the third electromagnetic valve 512 and the fourth electromagnetic valve 513. The air compressor 502 is configured to provide a compressed air source to the total air inlet pipe 503 and the first air inlet pipe 506, the second air inlet pipe 507, the third air inlet pipe 508 and the fourth air inlet pipe 509, to provide power for air testing, to adjust the air pressure entering the system and to ensure that the test conditions meet the pressure requirements in actual use of the product. The pressure regulating valve 504 is configured to adjust the air pressure entering the system and to ensure that the test conditions meet the pressure requirements in actual use of the product. The flow meter 505 is configured to measure the air flow through each electromagnetic valve, to determine whether the manifold end check valve 403, the air filter end check valve 404, the oil return valve 405 and the air supplement valve 406 to be detected have a leak, and the first electromagnetic valve 510, the second electromagnetic valve 511, the third electromagnetic valve 512 and the fourth electromagnetic valve 513 are opened in a predetermined order one by one, so that the compressed air flows through each valve to be detected in turn. The controller 501 controls the display of the opening and closing of each electromagnetic valve and controls the detection of the gas flow result of the flow meter 505 when each electromagnetic valve is opened. When a valve fails to pass the detection, the controller 501 controls the alarm to trigger an alarm and controls the display screen to display that the detection result of the valve is unqualified and further testing is stopped.

[0046] The first, second, third and fourth electromagnetic valves 513 control the compressed air flow to the manifold end check valve 403, the air filter end check valve 404, the oil return valve 405 and the air supplement valve 406 respectively, realizing independent detection of each valve. This design can accurately identify which valve has a leakage problem, improving the accuracy of fault location; the tool adjusts the air pressure entering the system to simulate the actual working conditions of the oil-gas separator 4, ensuring the authenticity and effectiveness of the test results; the system supports sequential testing and stops subsequent testing as soon as a problem is found, reducing unnecessary test steps and improving testing efficiency; the display not only shows the working status of each electromagnetic valve, but also displays the measurement data of the flow meter 505 in real time, making it easy for operators to quickly understand the test progress and results, and the alarm will respond immediately when there is a substandard condition, reminding the staff to pay attention and take appropriate measures.

[0047] As a preferred solution, as shown in Figures 2-3 Before the oil-gas separator 4 is welded, the oil-gas separator 4 includes an upper shell 401 and a lower shell 402, the manifold end check valve 403 and the air filter end check valve 404 are arranged on the upper shell 401, specifically, the bottom of the upper shell 401 is provided with a mounting cavity, the manifold end check valve 403 and the air filter end check valve 404 are arranged in the mounting cavity and are spaced apart; the oil return valve 405 and the air supplement valve 406 are arranged on the lower shell 402, the upper shell 401 and the lower shell 402 are spaced apart and mounted on the limiting seat 2; the limiting mechanism 3 includes an upper limiting assembly for limiting the upper shell 401 and a lower limiting assembly for limiting the lower shell 402. By dividing the oil-gas separator 4 into an upper shell 401 and a lower shell 402 before welding, and limiting them on the limiting seat 2 through the upper limiting assembly and the lower limiting assembly respectively, the specific valve with a leakage problem can be more accurately located.

[0048] As a preferred solution, as shown in Figures 2-4 The upper limiting assembly includes a rotary air cylinder 301, a limiting column 303 and a positioning column 304;

[0049] The upper shell 401 is provided with a positioning hole 407, the positioning column 304 is fixedly installed on the upper surface of the limiting seat 2, and the positioning hole 407 can vertically slide through the positioning column 304;

[0050] The left and right outer walls of the upper shell 401 are respectively provided with limiting grooves 408, the limiting column 303 is provided with two limiting grooves 408 corresponding to the two limiting grooves 408, and is located on the left and right sides of the positioning column 304, respectively, and the limiting column 303 can abut on the limiting groove 408;

[0051] The rotating cylinder 301 is installed on the limiting seat 2 and located at the rear side of the positioning column 304, the driving end of the rotating cylinder 301 is located above the limiting seat 2 and connected with the pressing block 302, the rotating cylinder 301 can drive the pressing block 302 to abut on the upper surface of the upper shell 401; the rotating cylinder 301 is electrically connected with the controller 501, in the embodiment, the rotating cylinder 301 is a 90-degree rotating cylinder 301, and the model is MKB32-10R.

[0052] Through the cooperation of the positioning column 304 and the positioning hole 407, the positioning column 304 is used for vertical sliding penetration, which ensures that the upper shell 401 can be accurately placed on the predetermined position, and the limiting groove 408 and the limiting column 303 further enhance the lateral stability of the upper shell 401, preventing unnecessary movement or deviation during detection; the rotating cylinder 301 and the pressing block 302 driven thereby can firmly press the upper shell 401 on the limiting seat 2 before detection, providing additional constraint force in the vertical direction and ensuring stability during the entire detection process.

[0053] As a preferred solution, as shown in Figure 4 、 Figure 8 and Figure 9 , the limiting seat 2 is provided with a first installation groove 201 corresponding to the positions of the manifold end one-way valve 403 and the air filter end one-way valve 404 of the upper shell 401, the first installation groove 201 is provided with a rubber pad 202, the upper surface of the rubber pad 202 is flush with the upper surface of the limiting seat 2, specifically, the installation cavity at the bottom of the upper shell 401 abuts on the upper surface of the rubber pad 202, so that the installation cavity forms a sealed space; the rubber pad 202 is arranged to seal the installation cavity of the upper shell 401, preventing gas leakage.

[0054] As shown in Figure 8 and 9As shown, the limiting seat 2 is communicated with a first pipeline connecting seat 203 and a second pipeline connecting seat 204, the first pipeline connecting seat 203 and the second pipeline connecting seat 204 are respectively communicated with a first gas conveying pipe 506 and a second gas conveying pipe 507, for introducing compressed air from the total gas inlet pipe 503; the limiting seat 2 is provided with a first gas inlet channel 205 and a second gas inlet channel 206 corresponding to the manifold end one-way valve 403 and the air filter end one-way valve 404, the gas inlet ends of the first gas inlet channel 205 and the second gas inlet channel 206 are respectively communicated with the gas outlet ends of the first pipeline connecting seat 203 and the second pipeline connecting seat 204, the first gas inlet channel 205 and the second gas inlet channel 206 are separated and are distributed along the front-rear direction of the limiting seat 2; the limiting seat 2 is also vertically provided with a first gas conveying channel 207 and a second gas conveying channel 208, the rubber pad 202 is vertically provided with a first air permeable hole 209 and a second air permeable hole 210 corresponding to the first gas conveying channel 207 and the second gas conveying channel 208, the first air permeable hole 209 and the second air permeable hole 210 are respectively communicated with the first gas conveying channel 207 and the second gas conveying channel 208, the first gas conveying channel 207 is communicated on the upper side of the first gas inlet channel 205, the upper end of the first gas conveying channel 207 is communicated with the gas inlet of the manifold end one-way valve 403 through the first air permeable hole 209, the second gas conveying channel 208 is communicated on the upper side of the second gas inlet channel 206, the upper end of the second gas conveying channel 208 is communicated with the gas inlet of the air filter end one-way valve 404 through the second air permeable hole 210. When the manifold end one-way valve 403 needs to be detected, the first electromagnetic valve 510 is opened by the controller 501, so that the compressed air output by the air compressor 502 flows into the manifold end one-way valve 403 through the total gas inlet pipe 503, the flow meter 505, the first gas conveying pipe 506, the first pipeline connecting seat 203, the first gas inlet channel 205, the first gas conveying channel 207 and the first air permeable hole 209 in turn, and is detected by the flow meter 505; when the air filter end one-way valve 404 needs to be detected, the second electromagnetic valve 511 is opened by the controller 501, so that the compressed air output by the air compressor 502 flows into the manifold end one-way valve 403 through the total gas inlet pipe 503, the flow meter 505, the second gas conveying pipe 507, the second pipeline connecting seat 204, the second gas inlet channel 206, the second gas conveying channel 208 and the second air permeable hole 210 in turn, and is detected by the flow meter 505. Through the above design, a fast and reliable gas transmission path is realized, the efficiency of the whole detection process is improved, and the compressed air can be efficiently and directly conveyed to the valve to be detected.

[0055] In the embodiment, as Figures 2-4As shown, the limiting seat 2 is further provided with a plugging cylinder, a connecting plate and a plugging head, the plugging cylinder is fixedly installed on the upper surface of the limiting seat 2, the driving end of the plugging cylinder is fixedly connected with the connecting plate, the plugging head is fixedly installed on the connecting plate, the air filter pipe is arranged above the air filter end check valve 404 on the upper shell 401, and the plugging head is located in front of the air filter pipe, the plugging cylinder can drive the mounting plate 307 and the plugging head to move forward and backward, when the air filter end check valve 404 needs to be detected, the mounting plate 307 is driven by the plugging cylinder to move towards the air filter pipe, until the rear side wall of the plugging head abuts at the opening of the air filter pipe, so that the air filter pipe is plugged, and the air tightness of the air filter end check valve 404 is detected.

[0056] As a preferred solution, as Figures 2-5 As shown, the lower limiting assembly includes a mounting frame 305, a telescopic cylinder 306, a mounting plate 307, a first limiting block 308, a second limiting block 309, a limiting cylinder 310 and a lower pressing seat 311;

[0057] The right side wall of the lower shell 402 is provided with a clamping groove 409, the first limiting block 308 and the second limiting block 309 are fixedly installed on the upper surface of the limiting seat 2 in a spaced manner along the left-right direction of the limiting seat 2, the first limiting block 308 can abut on the left side wall of the lower shell 402, and the second limiting block 309 can be clamped in the clamping groove 409 of the lower shell 402;

[0058] The lower shell 402 is provided with an oil return cylinder 410, the oil return valve 405 is arranged on the oil return cylinder 410, the lower shell 402 is provided with a gas supplement cavity 411, the gas supplement valve 406 is arranged in the gas supplement cavity 411, the mounting frame 305 is fixedly installed on the limiting seat 2, the telescopic cylinder 306 is vertically installed on the mounting frame 305, the driving end of the telescopic cylinder 306 is vertically downward and fixedly connected with the upper surface of the mounting plate 307, the limiting cylinder 310 and the lower pressing seat 311 are fixedly installed on the lower surface of the mounting plate 307 in correspondence with the positions of the oil return cylinder 410 and the gas supplement cavity 411, the limiting cylinder 310 and the lower pressing seat 311 are both hollow and used for gas transmission, the limiting cylinder 310 can be sleeved on the oil return cylinder 410, and the bottom of the limiting cylinder 310 can abut on the upper surface of the lower shell 402, the bottom of the lower pressing seat 311 can abut on the top of the gas supplement cavity 411, so that the gas supplement cavity 411 is in a sealed state; and the telescopic cylinder 306 is electrically connected with the controller 501.

[0059] The lower shell 402 is limited by the first limiting block 308 and the second limiting block 309, so as to ensure the accurate positioning and stability of the lower shell 402 in the horizontal direction and prevent the lower shell 402 from moving laterally during detection; the mounting plate 307 is driven by the telescopic cylinder 306 to move vertically and reciprocally, so as to drive the limiting cylinder 310 and the lower pressing seat 311 to move vertically and reciprocally; specifically, the limiting cylinder 310 is sleeved on the oil return cylinder 410, so as to ensure that the gas can enter the oil return valve 405 for testing and provide vertical limiting action for the lower shell 402, so that the lower shell 402 is more stable during detection of the oil return valve 405; the lower pressing seat 311 abuts against the top of the air supplement cavity 411 to form a sealed state, so as to ensure that the gas can only enter and exit through the air supplement valve 406, improve the accuracy of detection, and provide vertical limiting action for the lower shell 402, so that the lower shell 402 is more stable during detection of the air supplement valve 406.

[0060] In the embodiment, as shown in the figure, Figures 2-4 The upper surface of the upper shell 401 is vertically provided with a connecting column above the mounting cavity provided with the manifold end one-way valve 403 and the air filter end one-way valve 404; the bottom of the mounting plate 307 is further fixedly connected with a vertically arranged stabilizing cylinder above the connecting column, and the stabilizing cylinder is in a hollow structure; the mounting plate 307 is driven by the telescopic cylinder 306 to drive the stabilizing cylinder to move downward, so that the stabilizing cylinder can be sleeved on the connecting column and abut against the upper surface of the upper shell 401, for providing vertical limiting action for the upper shell 401 during detection.

[0061] As a preferred scheme, the limiting cylinder 310 and the lower pressing seat 311 are respectively communicated with a third pipeline connecting seat 312 and a fourth pipeline connecting seat 313, and the third pipeline connecting seat 312 and the fourth pipeline connecting seat 313 are respectively communicated with the third gas conveying pipe 508 and the fourth gas conveying pipe 509.

[0062] As shown in the figure, Figure 3As shown, the inner peripheral wall of the limiting cylinder 310 is fixedly connected with a rubber cylinder 314, the inner peripheral wall of the rubber cylinder 314 can tightly fit with the outer peripheral wall of the oil return cylinder 410, the limiting cylinder 310 communicates with the air inlet of the oil return valve 405 through the oil return cylinder 410; the bottom of the lower pressing seat 311 is provided with a second mounting groove, the second mounting groove is provided with a rubber block 315, the lower surface of the rubber block 315 is flush with the lower surface of the lower pressing seat 311, the rubber block 315 is provided with a third air hole 316, which is used for communicating with the lower pressing seat 311, the lower pressing seat 311 communicates with the air inlet of the air supplement valve 406 through the third air hole 316 on the rubber pad 202. The mounting plate 307 drives the limiting cylinder 310 and the lower pressing seat 311 to move downward through the telescopic air cylinder 306, until the limiting cylinder 310 is sleeved on the oil return cylinder 410 and the bottom of the limiting cylinder 310 abuts against the upper surface of the lower shell 402, at the same time, the bottom of the lower pressing seat 311 abuts against the top of the air supplement cavity 411, so that the air supplement cavity 411 is in a sealed state; when the oil return valve 405 needs to be detected, the third electromagnetic valve 512 is opened through the controller 501, so that the compressed air output by the air compressor 502 flows into the oil return valve 405 through the total air inlet pipe 503, the flow meter 505, the third air pipe 508, the third pipe connecting base 312 and the limiting cylinder 310 in sequence, and is detected through the flow meter 505; when the air supplement valve 406 needs to be detected, the fourth electromagnetic valve 513 is opened through the controller 501, so that the compressed air output by the air compressor 502 flows into the air supplement valve 406 through the total air inlet pipe 503, the flow meter 505, the fourth air pipe 509, the fourth pipe connecting base 313, the lower pressing seat 311 and the third air hole 316 in sequence, and is detected through the flow meter 505.

[0063] The utility model has been described in detail. The description of the specific embodiment is only used to help understand the method and the core idea of the utility model. It should be pointed out that the ordinary skilled in the art can make some improvements and modifications of the utility model without departing from the principle of the utility model, and these improvements and modifications also fall within the protection scope of the utility model claim.

Claims

1. A valve testing fixture for an oil-gas separator, characterized in that: The utility model relates to an oil-gas separator detection device The detection device comprises a detection table (1), a limiting seat (2) arranged on the detection table (1), a limiting mechanism (3) arranged on the limiting seat (2) and used for limiting an oil-gas separator (4), a manifold end one-way valve (403), an air filter end one-way valve (404), an oil return valve (405) and a gas supplement valve (406) arranged on the oil-gas separator (4), a detection mechanism (5) comprising a controller (501), an air compressor (502), a total air inlet pipe (503), a flow meter (505), a first electromagnetic valve (510), a second electromagnetic valve (511), a third electromagnetic valve (512) and a fourth electromagnetic valve (513), wherein the air compressor (502), the flow meter (505), the first electromagnetic valve (510), the second electromagnetic valve (511), the third electromagnetic valve (512) and the fourth electromagnetic valve (513) are electrically connected to the controller (501), the air compressor (502) is communicated with the flow meter (505) through the total air inlet pipe (503), the output port of the flow meter (505) is respectively communicated with a first gas conveying pipe (506), a second gas conveying pipe (507), a third gas conveying pipe (508) and a fourth gas conveying pipe (509), the first gas conveying pipe (506), the second gas conveying pipe (507), the third gas conveying pipe (508) and the fourth gas conveying pipe (509) are respectively communicated to the air inlet port of the manifold end one-way valve (403), the air filter end one-way valve (404), the oil return valve (405) and the gas supplement valve (406), and the first electromagnetic valve (510), the second electromagnetic valve (511), the third electromagnetic valve (512) and the fourth electromagnetic valve (513) are respectively arranged on the first gas conveying pipe (506), the second gas conveying pipe (507), the third gas conveying pipe (508) and the fourth gas conveying pipe (509), the oil-gas separator (4) comprises an upper shell (401) and a lower shell (402), the manifold end one-way valve (403) and the air filter end one-way valve (404) are arranged on the upper shell (401), the oil return valve (405) and the gas supplement valve (406) are arranged on the lower shell (402), and the upper shell (401) and the lower shell (402) are spaced apart and mounted on the limiting seat (2), the limiting mechanism (3) comprises an upper limiting assembly for limiting the upper shell (401) and a lower limiting assembly for limiting the lower shell (402), the upper limiting assembly comprises a rotary air cylinder (301), a limiting column (303) and a positioning column (304), a positioning hole (407) is formed in the upper shell (401), the positioning column (304) is fixedly installed on the upper surface of the limiting seat (2), the positioning hole (407) can be vertically slid on the positioning column (304), limiting grooves (408) are respectively formed in the left and right outer side walls of the upper shell (401), the limiting column (303) is provided with two limiting grooves (408) and is located on the left and right sides of the positioning column (304), and the limiting column (303) can abut on the limiting grooves (408). ​ ​ ​ 2. The valve testing fixture for oil and gas separators according to claim 1, characterized in that: ​ ​ 3. The valve testing fixture for oil and gas separators according to claim 2, characterized in that: ​ ​ ​ The rotating air cylinder (301) is installed on the limiting seat (2) and located at the rear side of the positioning column (304), the driving end of the rotating air cylinder (301) is located above the limiting seat (2) and connected with the pressing block (302), and the rotating air cylinder (301) can drive the pressing block (302) to abut on the upper surface of the upper shell (401); The rotating air cylinder (301) is electrically connected with the controller (501).

4. The valve testing fixture for oil and gas separators according to claim 3, characterized in that: The limiting seat (2) is provided with the first installation groove (201) corresponding to the positions of the manifold end one-way valve (403) and the air filter end one-way valve (404) of the upper shell (401), the first installation groove (201) is provided with the rubber pad (202), and the upper surface of the rubber pad (202) is flush with the upper surface of the limiting seat (2); The limiting seat (2) is communicated with the first pipeline connecting seat (203) and the second pipeline connecting seat (204), the first pipeline connecting seat (203) and the second pipeline connecting seat (204) are communicated with the first gas conveying pipe (506) and the second gas conveying pipe (507) respectively, the limiting seat (2) is provided with the first air inlet channel (205) and the second air inlet channel (206) corresponding to the manifold end one-way valve (403) and the air filter end one-way valve (404), the air inlet ends of the first air inlet channel (205) and the second air inlet channel (206) are communicated with the air outlet ends of the first pipeline connecting seat (203) and the second pipeline connecting seat (204) respectively, the first air inlet channel (205) and the second air inlet channel (206) are separated and distributed along the front-rear direction of the limiting seat (2), the limiting seat (2) is also vertically provided with the first gas conveying channel (207) and the second gas conveying channel (208), the rubber pad (202) is vertically provided with the first air permeation hole (209) and the second air permeation hole (210) corresponding to the first gas conveying channel (207) and the second gas conveying channel (208), the first air permeation hole (209) and the second air permeation hole (210) are communicated with the first gas conveying channel (207) and the second gas conveying channel (208) respectively, the first gas conveying channel (207) is communicated on the upper side of the first air inlet channel (205), the upper end of the first gas conveying channel (207) is communicated with the air inlet of the manifold end one-way valve (403) through the first air permeation hole (209), and the second gas conveying channel (208) is communicated on the upper side of the second air inlet channel (206), the upper end of the second gas conveying channel (208) is communicated with the air inlet of the air filter end one-way valve (404) through the second air permeation hole (210).

5. The valve testing fixture for oil and gas separators as claimed in claim 2, wherein: The lower limiting assembly comprises a mounting frame (305), a telescopic air cylinder (306), a mounting plate (307), a first limiting block (308), a second limiting block (309), a limiting cylinder (310) and a lower pressing seat (311). The right side wall of the lower shell (402) is provided with a clamping groove (409), the first limiting block (308) and the second limiting block (309) are fixedly installed on the upper surface of the limiting seat (2) in the left-right direction of the limiting seat (2), the first limiting block (308) can abut on the left side wall of the lower shell (402), and the second limiting block (309) can be clamped in the clamping groove (409) of the lower shell (402); The lower shell (402) is provided with an oil return cylinder (410), the oil return valve (405) is arranged on the oil return cylinder (410), the lower shell (402) is provided with a gas supplement cavity (411), the gas supplement valve (406) is arranged in the gas supplement cavity (411), the mounting frame (305) is fixedly installed on the limiting seat (2), the telescopic air cylinder (306) is vertically installed on the mounting frame (305), the driving end of the telescopic air cylinder (306) is vertically downward and fixedly connected with the upper surface of the mounting plate (307), the limiting cylinder (310) and the pressing seat (311) are fixedly installed on the lower surface of the mounting plate (307) in correspondence with the positions of the oil return cylinder (410) and the gas supplement cavity (411), the limiting cylinder (310) and the pressing seat (311) are both hollow, the limiting cylinder (310) can be sleeved on the oil return cylinder (410), and the pressing seat (311) can abut on the top of the gas supplement cavity (411), so that the gas supplement cavity (411) is in a sealed state. The telescopic air cylinder (306) is electrically connected with the controller (501).

6. A valve testing fixture for oil and gas separators as claimed in claim 5, wherein: The limiting cylinder (310) and the pressing seat (311) are respectively communicated with a third pipeline connecting seat (312) and a fourth pipeline connecting seat (313), and the third pipeline connecting seat (312) and the fourth pipeline connecting seat (313) are respectively communicated with a third gas conveying pipe (508) and a fourth gas conveying pipe (509). The inner peripheral wall of the limiting cylinder (310) is fixedly connected with a rubber cylinder (314), the inner peripheral wall of the rubber cylinder (314) can be tightly attached to the outer peripheral wall of the oil return cylinder (410), and the limiting cylinder (310) is communicated with the air inlet of the oil return valve (405) through the oil return cylinder (410); the bottom of the pressing seat (311) is provided with a second installation groove, the second installation groove is provided with a rubber block (315), the lower surface of the rubber block (315) is flush with the lower surface of the pressing seat (311), a third air permeable hole (316) is formed in the rubber block (315) and used for communication with the pressing seat (311), and the pressing seat (311) is communicated with the air inlet of the gas supplement valve (406) through the third air permeable hole (316) in the rubber pad (202).

7. The valve testing fixture for oil and gas separators as claimed in claim 1, wherein: The air compressor (502) and the flow meter (505) are communicated with a pressure regulating valve (504).

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