Petroleum pipeline instrument control valve convenient to maintain

Abstract

The utility model discloses a petroleum pipeline instrument control valve convenient to maintain, which comprises an instrument machine box and a dehumidification mechanism arranged at the upper part in the instrument machine box, the dehumidification mechanism comprises a dehumidification box arranged at the top end of the interior of the instrument box in a penetrating mode, ventilation holes formed in the bottom end of the interior of the dehumidification box, medicament frames evenly formed in the periphery of the dehumidification box and a box cover rotationally arranged at the top end of the dehumidification box, the ventilation holes are filled with calcium chloride drying agents, and a mounting mechanism is arranged at the bottom end of the instrument box; and the mounting mechanism comprises a mounting block arranged at the bottom end of the instrument box, a fixed seat arranged outside the mounting block in a sliding manner, and a movable groove formed in the fixed seat. By arranging the instrument box, the dehumidification mechanism, the dehumidification box, the medicament frame, the ventilation holes and the box cover, water vapor entering the instrument box can be absorbed by utilizing the medicament drying work in the medicament frame, and the damage of the water vapor to equipment in the instrument box is avoided as much as possible.

Description

Technical Field

[0001] The utility model relates to the technical field of oil pipelines, in particular to an oil pipeline instrument control valve which is easy to maintain. Background Art

[0002] The instrument control valve is a pipeline accessory, which is used to change the passage section and the flow direction of the medium and control the flow of the conveying medium. The instrument control valve is equipped with a feedback device, which is a field instrument for automatic valve position and signal feedback. It is used to detect and monitor the piston movement position inside the cylinder valve or other cylinder actuators, and to display the changes in the air pressure inside the valve and the piston movement position through the instrument box. The existing petrochemical pipeline instrument control valves need to be maintained frequently during operation, so an oil pipeline instrument control valve that is easy to maintain is needed.

[0003] At present, a petrochemical pipeline instrument control valve that is easy to maintain is described in the patent with publication number CN 218440879U. The product comprises: a valve body, a signal return device arranged on the top of the valve body, and an instrument box arranged on the top of the signal return device. The top surface of the signal return device is fixedly connected with a slide seat, and the bottom surface of the instrument box is fixed with a slide block that slides with the signal return device. By arranging a locking mechanism in the fixed block, the locking mechanism is first energized and retracted in the fixed block during installation, and then the dovetail block at the bottom of the instrument box can be slidably inserted into the slide groove from one side of the slide seat, so that the connecting block on one side of the dovetail block slides into the alignment hole. At this time, the plug hole at the bottom of the connecting block is just above the pin. By disconnecting the locking mechanism circuit, the locking mechanism can quickly lock the instrument box on the signal return device, thereby quickly completing the installation of the instrument box. At the same time, it is convenient to quickly complete the disassembly action of the instrument box through the locking mechanism, so as to realize the rapid maintenance of the instrument box.

[0004] With respect to the above-mentioned related technologies, the applicant believes that since most petrochemical pipelines are installed in underground pipe galleries, the equipment inside the instrument box is easily damaged by moisture due to the humid environment, which can easily affect the normal operation of the device. Utility Model Content

[0005] The utility model aims to provide a control valve for an oil pipeline instrument which is easy to maintain, so as to solve the problems of the device proposed in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an oil pipeline instrument control valve that is easy to maintain, including an instrument box and a dehumidification mechanism, wherein the dehumidification mechanism is arranged above the inside of the instrument box, and the dehumidification mechanism includes a dehumidification box that penetrates the top of the inside of the instrument box, a ventilation hole that is arranged at the bottom of the inside of the dehumidification box, a medicine frame that is evenly opened around the dehumidification box, and a box cover that is rotatably arranged at the top of the dehumidification box, and the inside of the ventilation hole is filled with calcium chloride desiccant.

[0007] By adopting the above technical solution and utilizing the work of drying the reagent inside the reagent frame, the water vapor entering the instrument box can be absorbed, thereby preventing the water vapor from damaging the equipment inside the instrument box.

[0008] Preferably, a mounting mechanism is provided at the bottom end of the instrument box, and the mounting mechanism includes a mounting block arranged at the bottom end of the instrument box, a fixed seat slidably arranged outside the mounting block, a movable groove opened inside the fixed seat, a spring arranged inside the movable groove, an adjusting rod arranged at the top end of the spring, and a clamping block arranged at the top end of the adjusting rod.

[0009] By adopting the above technical solution, the instrument box can be slidably disassembled and removed from the inside of the fixing seat, so that the instrument box can be easily inspected and repaired.

[0010] Preferably, a limiting mechanism is provided at the top of the instrument box, and the limiting mechanism includes a limiting seat arranged at one end of the top of the instrument box, a magnet block arranged inside the limiting seat, a fixed block arranged at the top of the box cover close to one end of the limiting seat, and a limiting rod slidably arranged inside the fixed block.

[0011] By adopting the above technical solution, the limiting rod can be moved out from the inside of the limiting seat by pulling the limiting rod, so that the box cover can be opened conveniently, thereby facilitating the replacement of the desiccant inside the instrument box.

[0012] Preferably, a signal return device is provided at the bottom end of the mounting mechanism, and a valve body is provided at the bottom end of the signal return device.

[0013] By adopting the above technical solution, it is convenient to control the oil pipeline.

[0014] Preferably, a clamping groove is provided at the bottom end of the mounting block, and the clamping groove is consistent with the clamping block.

[0015] By adopting the above technical solution, the elasticity of the spring can be used to push the clamping block to be inserted into the interior of the mounting block, so that the instrument box can be locked on the fixing seat.

[0016] Preferably, a T-shaped sliding groove is provided at the top of the fixing seat, and the mounting block is arranged in an inverted T shape.

[0017] By adopting the above technical solution, the installation block can be easily limited.

[0018] Preferably, a sliding hole is provided inside the fixing block, and a limiting block is provided at one end outside the limiting rod, and the diameter of the limiting block is larger than the diameter of the sliding hole.

[0019] By adopting the above technical solution, the limiting rod can be easily limited, and the limiting rod can be prevented from slipping out of the sliding hole inside the fixing block as much as possible.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] 1. By arranging the instrument box, dehumidification mechanism, dehumidification box, reagent frame, ventilation holes and box cover, the moisture entering the instrument box can be absorbed by utilizing the drying agent inside the reagent frame, thus avoiding the moisture from damaging the equipment inside the instrument box;

[0022] 2. By providing an instrument box, a dehumidification box, a box cover, a limit mechanism, a fixing block, a limit seat, a magnet block and a limit rod, the limit rod can be moved out from the inside of the limit seat by pulling the limit rod, so that the box cover can be opened conveniently, thereby facilitating the replacement of the desiccant inside the instrument box, and effectively improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the front view of the instrument box of the utility model;

[0025] Figure 3 This is a side view of the structure of the fixing seat of the utility model;

[0026] Figure 4 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0027] Figure 5 For this utility model Figure 2 Enlarged structural diagram at B in the middle.

[0028] In the figure: 1. instrument box; 2. valve body; 3. feedback device; 4. mounting mechanism; 401. mounting block; 402. fixing seat; 403. clamping block; 404. adjusting rod; 405. movable slot; 406. spring; 5. dehumidification mechanism; 501. dehumidification box; 502. medicine frame; 503. ventilation hole; 504. box cover; 6. limiting mechanism; 601. fixing block; 602. limiting seat; 603. magnet block; 604. limiting rod. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figures 1 to 5 The utility model provides a technical solution: an oil pipeline instrument control valve that is easy to maintain, comprising an instrument box 1 and a dehumidification mechanism 5, the dehumidification mechanism 5 is arranged above the inside of the instrument box 1, and can improve the dryness inside the instrument box 1; the dehumidification mechanism 5 includes a dehumidification box 501 that is arranged through the top of the inside of the instrument box 1, and the dehumidification box 501 can provide bearing capacity; the ventilation holes 503 arranged at the bottom end of the dehumidification box 501 can facilitate the circulation of air inside the dehumidification box 501; the reagent frames 502 evenly arranged around the dehumidification box 501 and the box cover 504 rotatably arranged at the top of the dehumidification box 501, the ventilation holes 503 are filled with calcium chloride desiccant, and the calcium chloride desiccant in the reagent frame 502 can be used to absorb the water vapor entering the inside of the instrument box 1, and try to avoid the water vapor from damaging the equipment inside the instrument box 1, thereby effectively extending the service life of the device.

[0031] The bottom of the instrument box 1 is provided with a mounting mechanism 4, and the bottom of the mounting mechanism 4 is provided with a return device 3, and the circuit inside the instrument box 1 is connected to the return device 3; a valve body 2 is provided through the bottom of the return device 3, which is convenient for controlling the oil pipeline; the mounting mechanism 4 includes a mounting block 401 arranged at the bottom of the instrument box 1, and a fixing seat 402 slidably arranged outside the mounting block 401, and the fixing seat 402 can provide bearing capacity; a T-shaped sliding groove is provided at the top of the fixing seat 402, and the mounting block 401 is set to an inverted T shape, which can facilitate the mounting block 4 01 for limiting; a movable groove 405 is provided inside the fixed seat 402, a spring 406 is arranged inside the movable groove 405, an adjusting rod 404 is arranged at the top of the spring 406 and a clamping block 403 is arranged at the top of the adjusting rod 404; a clamping groove is provided at the bottom end of the mounting block 401, and the clamping groove is matched with the clamping block 403; by manually pushing the adjusting rod 404 downward, the clamping block 403 is moved out from the inside of the mounting block 401, and then the instrument box 1 can be slid and disassembled from the inside of the fixed seat 402, so that the instrument box 1 can be easily inspected and repaired.

[0032] See also Figure 5A limiting mechanism 6 is provided at the top of the instrument box 1. The limiting mechanism 6 includes a limiting seat 602 provided at one end of the top of the instrument box 1. The limiting seat 602 can provide bearing force, a magnet block 603 provided inside the limiting seat 602, a fixed block 601 provided at the top of the box cover 504 near one end of the limiting seat 602, and a limiting rod 604 slidably provided inside the fixed block 601. The limiting rod 604 can be separated from the magnet block 603 by pulling the limiting rod 604, so that the limiting rod 604 can be moved out from the inside of the limiting seat 602, so that the box cover 504 can be opened conveniently, so as to facilitate the replacement of the dry medicine inside the medicine frame 502; a sliding hole is provided inside the fixed block 601, and a limiting block is provided at one end outside the limiting rod 604. The diameter of the limiting block is larger than the diameter of the sliding hole, so that the limiting rod 604 can be limited conveniently to avoid the limiting rod 604 from slipping off from the sliding hole inside the fixed block 601 as much as possible.

[0033] Working principle: First, when installing the instrument box 1, slide the mounting block 401 at the bottom of the instrument box 1 from one side of the fixing seat 402 and insert it into the inside of the fixing seat 402, loosen the adjustment rod 404, and use the elasticity of the spring 406 to push the card block 403 to insert into the inside of the mounting block 401, so that the instrument box 1 can be locked on the fixing seat 402; if the instrument box 1 needs to be disassembled, manually push the adjustment rod 404 downward to move the card block 403 out of the inside of the mounting block 401, and then the instrument box 1 can be slid and disassembled from the inside of the fixing seat 402;

[0034] Secondly, when the device is working, the calcium chloride desiccant in the reagent frame 502 can absorb the water vapor entering the instrument box 1, and try to avoid the water vapor from damaging the equipment inside the instrument box 1, which effectively extends the service life of the device;

[0035] Finally, by pulling the limit rod 604, the limit rod 604 can be separated from the magnet block 603, so that the limit rod 604 can be moved out from the inside of the limit seat 602, and the box cover 504 can be opened conveniently, so as to facilitate the replacement of the dry medicine inside the medicine frame 502, effectively improving the practicality of the device.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An oil pipeline instrument control valve that is easy to maintain, characterized in that: include: Instrument box (1); A dehumidification mechanism (5) is arranged above the inside of the instrument box (1), and comprises a dehumidification box (501) penetrating the top of the inside of the instrument box (1), a ventilation hole (503) arranged at the bottom of the inside of the dehumidification box (501), a medicine frame (502) evenly arranged around the dehumidification box (501), and a box cover (504) rotatably arranged at the top of the dehumidification box (501), and the inside of the ventilation hole (503) is filled with calcium chloride desiccant.

2. The oil pipeline instrument control valve that is easy to maintain according to claim 1 is characterized by: The bottom end of the instrument box (1) is provided with a mounting mechanism (4), and the mounting mechanism (4) comprises a mounting block (401) arranged at the bottom end of the instrument box (1), a fixing seat (402) slidably arranged outside the mounting block (401), a movable groove (405) provided inside the fixing seat (402), a spring (406) arranged inside the movable groove (405), an adjusting rod (404) arranged at the top end of the spring (406), and a clamping block (403) arranged at the top end of the adjusting rod (404).

3. The oil pipeline instrument control valve that is easy to maintain according to claim 1 is characterized by: A limiting mechanism (6) is arranged at the top of the instrument box (1), and the limiting mechanism (6) comprises a limiting seat (602) arranged at one end of the top of the instrument box (1), a magnet block (603) arranged inside the limiting seat (602), a fixing block (601) arranged at the top of the box cover (504) close to one end of the limiting seat (602), and a limiting rod (604) slidably arranged inside the fixing block (601).

4. The oil pipeline instrument control valve that is easy to maintain according to claim 2 is characterized by: A signal return device (3) is arranged at the bottom end of the installation mechanism (4), and a valve body (2) is arranged at the bottom end of the signal return device (3).

5. The oil pipeline instrument control valve that is easy to maintain according to claim 2 is characterized by: A clamping groove is provided at the bottom end of the installation block (401), and the clamping groove is matched with the clamping block (403).

6. The oil pipeline instrument control valve that is easy to maintain according to claim 2 is characterized by: A T-shaped sliding groove is provided at the top of the fixing seat (402), and the mounting block (401) is arranged in an inverted T shape.

7. The oil pipeline instrument control valve that is easy to maintain according to claim 3 is characterized by: A sliding hole is provided inside the fixing block (601), and a limiting block is provided at one end outside the limiting rod (604), wherein the diameter of the limiting block is greater than the diameter of the sliding hole.

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