Instrument adjusting tool

Abstract

The application provides an instrument adjusting tool, which comprises a tool body, a sealing element and a height adjusting element. The sealing element is inserted into a first through hole from a flange mounting cavity at the top end of the tool body and penetrates through the bottom end of the tool body, the height adjusting element is sleeved on the tool body and the sealing element and is connected through threaded cooperation respectively, opposite threads are processed on the height adjusting element, and the height adjusting element is connected with the tool body and the sealing element through the opposite threads. Relative movement between the sealing element and the tool body is realized by rotating the height adjusting element, so that the clamping space formed between the flange mounting cavity of the tool body and the sealing element is increased or reduced, and then the instrument flange mounted in the clamping space is clamped or loosened. The instrument adjusting tool provided by the application can adapt to the flange thickness of various instruments.

Description

Technical Field

[0001] This invention belongs to the field of instrument adjustment tooling technology, and specifically relates to an instrument adjustment tooling. Background Technology

[0002] Flange pressure gauges are widely used in industry, where they are frequently used to measure and monitor pressure changes in pipelines, containers, or equipment. To ensure accurate measurements, a seal is required between the flange pressure gauge and the air source. However, due to variations in flange thickness among different pressure gauges, seals of varying sizes are necessary for this connection.

[0003] Currently, several solutions exist for connecting pressure gauges and air sources via flanges. For example, some seals are made of rubber or metal materials of varying sizes to accommodate pressure gauge flanges of different thicknesses. However, these solutions still present some challenges, such as the potential for increased cost and complexity in manufacturing and supplying seals of different sizes.

[0004] Therefore, how to overcome the above-mentioned technical defects is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide an instrument adjustment fixture that can adapt to the flange thickness of various instruments.

[0006] To solve the above-mentioned technical problems, the present invention provides an instrument adjustment fixture, comprising: a fixture body, a sealing element, and a height adjustment element;

[0007] The tooling body has a top end and a bottom end. The top end of the tooling body is a flange mounting cavity for installing an instrument flange, and the bottom end is a first column. The first column has a first through hole for inserting the sealing element. The first through hole communicates with the flange mounting cavity. The flange mounting cavity has an opening for the instrument flange to enter and exit. The first column is provided with a first external thread.

[0008] The sealing element has a top end, a middle section, and a bottom end. The top end of the sealing element is located inside the flange mounting cavity, and the upper surface of the top end of the sealing element is used to mate with the instrument flange. The lower surface of the top end of the sealing element contacts the bottom of the flange mounting cavity. The middle section of the sealing element passes through the first through hole, and the bottom end is located outside the tooling body and is used to connect with the air source. The sealing element has a second through hole that penetrates the top end and the bottom end. The second through hole is used to connect the instrument and the air source. The middle section of the sealing element has a second external thread.

[0009] The height adjustment component has a third through hole for mounting the bottom end of the tooling body and the middle section of the sealing component. The third through hole has a first internal thread for engaging with the first external thread at the connection point with the bottom end of the tooling body, and a second internal thread for engaging with the second external thread at the connection point with the middle section of the sealing component.

[0010] The first internal thread and the second internal thread have opposite thread directions.

[0011] Optionally, in the above-mentioned instrument adjustment fixture, the bottom end of the seal is provided with a third external thread for connection with the gas source equipment.

[0012] Optionally, in the above-mentioned instrument adjustment fixture, the top of the seal is a disc-shaped structure, and the middle and bottom sections of the seal are second columns.

[0013] Optionally, in the above-mentioned instrument adjustment fixture, the top of the seal is provided with a sealing ring mounting groove.

[0014] Optionally, in the above-mentioned instrument adjustment fixture, the upper part of the flange mounting cavity has two symmetrically arranged flanges, which are respectively placed at both ends and have an opening in the middle. The space formed between the two flanges is used to install the instrument flange.

[0015] Optionally, in the above-mentioned instrument adjustment fixture, the height adjustment component is provided with a tool relief groove in the middle section of the third through hole.

[0016] Optionally, in the above-mentioned instrument adjustment fixture, the bottom end of the seal is provided with an operating position for rotating the wrench.

[0017] Optionally, in the above-mentioned instrument adjustment fixture, the cross-section of the operating position and / or the height adjustment component is a regular polygon.

[0018] Optionally, in the above-mentioned instrument adjustment fixture, the first external thread is a left-hand external thread, the second external thread is a right-hand external thread, the first internal thread is a left-hand internal thread, and the second internal thread is a right-hand internal thread.

[0019] Optionally, in the above-mentioned instrument adjustment fixture, the flange mounting cavity includes a first cavity and a second cavity arranged sequentially from top to bottom. The first cavity is used to install the instrument flange, and the second cavity is used to install the top of the seal.

[0020] This invention provides an instrument adjustment fixture, the advantages of which are:

[0021] The sealing element is inserted into the first through hole through the flange mounting cavity at the top of the tooling body and passes through the bottom of the tooling body. A height adjustment component is fitted onto the tooling body and the sealing element and connected via threads. The height adjustment component has threads with opposite directions, which connect to the tooling body and the sealing element respectively. Rotating the height adjustment component allows relative movement between the sealing element and the tooling body, increasing or decreasing the clamping space between the flange mounting cavity of the tooling body and the sealing element, thereby clamping or releasing the instrument flange installed within the clamping space. The instrument adjustment tooling described above can accommodate flange thicknesses of various instruments. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of an instrument adjustment fixture provided in an embodiment of the present invention;

[0024] Figure 2 A schematic diagram of the instrument adjustment fixture and the instrument assembly structure provided in the embodiments of the present invention;

[0025] Figure 3 A half-sectional view of an instrument adjustment fixture provided in an embodiment of the present invention;

[0026] Figure 4 A half-sectional view of the tooling body provided in an embodiment of the present invention;

[0027] Figure 5 A half-sectional view of the seal provided in an embodiment of the present invention;

[0028] Figure 6 This is a half-sectional view of the height adjustment component provided in an embodiment of the present invention.

[0029] exist Figures 1-6 middle:

[0030] A-Instrument adjustment fixture; B-Instrument;

[0031] 1-Tooling body; 101-Flange mounting cavity; 102-First external thread; 103-First through hole;

[0032] 2-Seal; 201-Second through hole; 202-Second external thread; 203-Third external thread; 204-Operating position; 205-Sealing ring mounting groove; 206-Second column;

[0033] 3-Height adjustment component; 301-First internal thread; 302-Second internal thread; 303-Third through hole. Detailed Implementation

[0034] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0035] The core of this invention is to provide an instrument adjustment fixture that can adapt to the flange thickness of various instruments.

[0036] To enable those skilled in the art to better understand the technical solutions provided by the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] Please refer to Figures 1-6 The present invention provides an instrument adjustment fixture A, comprising: fixture body 1, sealing element 2 and height adjustment element 3.

[0038] Instrument B has an instrument flange at its bottom. Instrument B is connected to the working body 1 via the instrument flange.

[0039] The tooling body 1 has a top end and a bottom end. The top end of the tooling body 1 is a flange mounting cavity 101 for installing an instrument flange, and the bottom end is a first column. The first column has a first through hole 103 for inserting a sealing element 2. The first through hole 103 communicates with the flange mounting cavity 101. The flange mounting cavity 101 has an opening for the instrument flange to enter and exit. The first column is provided with a first external thread 102.

[0040] The seal 2 has a top, a middle section, and a bottom. The top of the seal 2 is located inside the flange mounting cavity 101, and the upper surface of the top of the seal 2 is used to mate with the instrument flange. The lower surface of the top of the seal 2 contacts the bottom of the flange mounting cavity 101. A clamping position for clamping and fixing the instrument flange is formed between the upper surface of the seal 2 and the flange mounting cavity 101. The middle section of the seal 2 passes through the first through hole 103, and the bottom is located outside the tooling body 1 and is used to connect to the air source. The seal 2 has a second through hole 201 that passes through the top and bottom, and the second through hole 201 is used to connect the instrument B and the air source. The middle section of the seal 2 is provided with a second external thread 202.

[0041] The height adjustment component 3 has a third through hole 303 for mounting the bottom end of the tooling body 1 and the middle section of the seal 2. The third through hole 303 is provided with a first internal thread 301 for cooperating with the first external thread 102 at the connection with the bottom end of the tooling body 1, and the third through hole 303 is provided with a second internal thread 302 for cooperating with the second external thread 202 at the connection with the middle section of the seal 2.

[0042] The first internal thread 301 and the second internal thread 302 have opposite thread directions, and similarly, the first external thread 102 and the second external thread 202 also have opposite thread directions.

[0043] It should be noted that when the height adjusting component 3 is rotated in the first direction, the height adjusting component 3 moves downward. This is because the upper part of the height adjusting component 3 engages with the first external thread 102 of the tooling body 1 through the first internal thread 301, and the lower part of the height adjusting component 3 engages with the second external thread 202 of the seal 2 through the second internal thread 302. The upper and lower threads rotate in opposite directions, so the tooling body 1 also moves downward relative to the height adjusting component 3. This allows the tooling body 1 and the seal 2 to move towards each other (i.e., the tooling body 1 and the seal 2 to move closer together), reducing the clamping space until the seal 2 contacts the bottom surface of the instrument flange and the top of the instrument flange abuts against the tooling body 1, thus achieving a seal.

[0044] Conversely, when the height adjustment component 3 is rotated in the second direction, the tooling body 1 and the seal 2 can move in opposite directions (i.e., the tooling body 1 and the seal 2 move away from each other), the clamping space increases, until the seal 2 can be detached from the bottom surface of the instrument flange and the top of the instrument flange from the tooling body 1, the sealing state is released, and the instrument B can be removed.

[0045] When instrument B is a flange pressure gauge, the instrument adjustment fixture A in this scheme is used to connect the flange pressure gauge to the pressure gas source.

[0046] The first direction can be clockwise and the second direction can be counterclockwise, or the first direction can be counterclockwise and the second direction can be clockwise. Accordingly, the thread directions of the first internal thread and the first external thread in this design can be adaptively designed according to the specific structure.

[0047] This invention provides an instrument adjustment fixture A. A sealing element 2 is inserted into a first through hole 103 through the flange mounting cavity 101 at the top of the fixture body 1, extending through the bottom end of the fixture body 1. A height adjustment element 3 is fitted onto the fixture body 1 and the sealing element 2, and connected by threads. The thread direction between the height adjustment element 3 and the fixture body 1 is opposite to the thread direction between the height adjustment element 3 and the fixture body 1. Rotating the height adjustment element 3 allows relative movement between the sealing element 2 and the fixture body 1, thereby increasing or decreasing the clamping space formed between the flange mounting cavity 101 of the fixture body 1 and the sealing element 2, thus clamping or releasing the instrument flange installed within the clamping space. The instrument adjustment fixture A described above can accommodate flange thicknesses of various instruments B.

[0048] In order to achieve a stable connection between the seal 2 and the air source device, the bottom end of the seal 2 is provided with a third external thread 203, and the air source device is provided with a threaded hole, which can be connected to the third external thread 203 of the seal 2.

[0049] The thread directions of the third external thread 203 and the second external thread 202 can be the same or different.

[0050] In a specific embodiment, the top of the seal 2 is a disc-shaped structure, and the middle and bottom sections of the seal 2 are second pillars 206. The diameters of the second external threads 202 and 203 on the second pillar 206 of the seal 2 are larger than the diameters of the other parts of the second pillar 206. Of course, the diameters of the second external threads 202 and 203 on the second pillar 206 of the seal 2 can also be equal to the diameters of the other parts of the second pillar 206.

[0051] Specifically, the diameter of the second column 206 at the second external thread 202 is equal to the diameter of the tooling body 1 at the first external thread 102, so that the height adjustment member 3 can simultaneously connect the tooling body 1 and the seal 2.

[0052] To improve the sealing performance between the seal 2 and the instrument flange, a sealing ring mounting groove 205 is provided at the top of the seal 2 for mounting the sealing ring. Specifically, it can be an annular sealing ring, or a sealing ring with other cross-sectional shapes.

[0053] The annular sealing ring can be an O-ring, a U-ring, or a sealing ring with other cross-sectional shapes, and the specific selection can be made according to actual needs.

[0054] When the distance between the instrument flange and the seal 2 decreases, the annular sealing ring, under the action of extrusion pressure, contacts the bottom surface of the instrument flange and deforms to achieve a seal.

[0055] In a specific embodiment, the upper part of the flange mounting cavity 101 has two symmetrically arranged flanges, which are located at both ends and have an opening in the middle. This opening is a clearance space to facilitate the passage of instrument B, and the space formed between the two flanges is used to install the instrument flange. The flange mounting cavity 101 of the tooling body 1 has two flanges symmetrically distributed on the left and right. The flanges are used to clamp the flange of instrument B from above, and the space below the flanges is used to accommodate the instrument flange.

[0056] Furthermore, in the manufacturing process of the third through hole 303 of the height adjustment component 3, in order to facilitate tool retraction, the height adjustment component 3 is provided with a tool retraction groove in the middle section of the third through hole 303.

[0057] The bottom end of the seal 2 is provided with an operating position 204 for rotating the wrench. The operating position 204 and / or the height adjustment member 3 are shafts with a cross-section of a regular quadrilateral, a regular pentagon, a regular hexagon, or other cross-sectional shapes, such as a square shaft, a pentagonal shaft, or a hexagonal shaft, etc.

[0058] By tightening the hexagon on the operating position 204 of the second column 206 with a wrench, the seal 2 can be easily tightened or removed from the air source equipment.

[0059] In one specific embodiment, the first external thread 102 is a left-hand external thread, the second external thread 202 is a right-hand external thread, the first internal thread 301 is a left-hand internal thread, and the second internal thread 302 is a right-hand internal thread.

[0060] In one specific embodiment, the flange mounting cavity 101 includes a first cavity and a second cavity arranged vertically. Preferably, the height of the second cavity is greater than or equal to the height of the top of the seal 2. The first cavity is used to mount the instrument flange, and the second cavity is used to mount the top of the seal 2. In particular, the diameter of the first cavity is greater than the diameter of the second cavity, which ensures that the instrument flange does not contact the seal 2 when not compressed. Of course, the diameter of the first cavity can also be equal to or smaller than the diameter of the second cavity, which will not be further elaborated here.

[0061] The flange mounting cavity 101 has openings on the top and side of the working body and communicates with the first cavity.

[0062] In one specific embodiment, such as Figures 1-3 As shown, this solution provides an instrument adjustment fixture A for connecting a flange pressure gauge to a pressure gas source.

[0063] The tooling body 1 has two flanges symmetrically distributed on the left and right sides. The flanges are used to clamp the flange of the pressure gauge from above. The space below the flanges is used to accommodate the flange. The first column below the tooling body 1 is a hollow cylinder with a first external thread 102 on its outer surface. The first external thread 102 is a left-hand external thread.

[0064] Above the seal 2 is a disc with an O-ring, positioned below the flange of the tooling body 1, used to seal the flange of the pressure gauge from below. Below the seal 2 is a second column 206, with a second through hole 201 along the center line of the second column 206 and the upper disc, allowing connection to an air source. The upper end of the second column 206 of the seal 2 rests within the first column of the tooling body 1, forming a clearance-fitted shaft and hole. The middle section of the second column 206 has a second external thread 202, which is a right-hand thread. The second external thread 202 of the seal 2 and the first external thread 102 of the tooling body 1 engage with the height adjustment component 3, allowing the tooling body 1 to be raised or lowered. The bottom end of the second column 206 has a third external thread 203, used to connect to an air pressure source and secure the tooling. Tightening the hexagonal wrench on the operating position 204 of the second column 206 allows the seal 2 to be easily tightened or removed from the pressure air source equipment.

[0065] The height adjustment component 3 connects the tooling body 1 and the seal 2, and can adjust the height of the tooling body 1. As a connecting component, the height adjustment component 3 is characterized by the following: the third through hole 303 is divided into three parts, the upper part is a left-hand internal thread, which mates with the left-hand external thread below the tooling body 1; the middle part is a tool relief groove; and the lower part of the tool relief groove is a right-hand internal thread, which mates with the right-hand external thread in the middle section of the seal 2.

[0066] Rotating the height adjusting component 3 clockwise (viewed from top to bottom) causes it to move downwards. Because the upper part of the height adjusting component 3 engages with the left-hand external thread of the tooling body 1 via a left-hand internal thread, and the lower part engages with the right-hand external thread of the sealing element 2 via a right-hand internal thread, with the two threads rotating in opposite directions, the tooling body 1 also moves downwards relative to the height adjusting component 3. As the tooling body 1 moves downwards, the distance between it and the sealing element 2 decreases. Under the pressure, the O-ring seal contacts the bottom surface of the flange, deforms, and achieves a seal. Figure 2 As shown.

[0067] Conversely, rotating the height adjustment component 3 counterclockwise (viewed from top to bottom) moves the tooling body 1 and the seal 2 away, thereby loosening the upper flange.

[0068] Specifically, the method of using instrument adjustment fixture A is as follows: First, rotate the height adjustment component 3 counterclockwise (viewed from top to bottom) to adjust the distance between the flange of the fixture body 1 and the disc at the top of the seal 2 to a sufficiently large size. The seal 2 is connected to the pressure air source equipment via the third thread at its bottom end. Move the flange of the pressure gauge horizontally and place it on the disc of the seal 2, aligning the center of the flange bottom surface with the central axis of the seal 2.

[0069] As mentioned earlier, rotating the height adjustment component 3 clockwise (viewed from top to bottom) causes the tooling body 1 to move downwards, pressing the flange onto the top of the flange. Continue rotating the height adjustment component 3 until the O-ring on the sealing component 2 is pressed, thus achieving a seal between the bottom surface of the flange and the pressure source.

[0070] Rotate the height adjustment piece 3 in the opposite direction (viewed from above) to loosen the flange of the pressure gauge and remove it.

[0071] The beneficial effects of the instrument adjustment fixture A provided in this solution are as follows:

[0072] 1. The clamping space formed between the tooling body 1 and the sealing element 2 has an adjustable longitudinal spacing, which can accommodate flanges of various thicknesses.

[0073] 2. Since the height adjustment component 3 is machined with both left-hand and right-hand threads, the relative movement speed of the tooling body 1 and the sealing component 2 is accelerated, the clamping time of the instrument B being tested is shortened, and the inspection efficiency is improved.

[0074] 3. The height adjustment component 3, the tooling body 1, and the sealing component 2 use a threaded fit, which provides sufficient clamping force for sealing.

[0075] This solution provides an instrument adjustment fixture for connecting instrument B to a gas source, which is adaptable to various flange thicknesses. It adopts an innovative structural design, can adapt to pressure gauge flanges of various thicknesses, has a long service life, and is relatively low in cost.

[0076] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0077] In the description of this application, "multiple" means two or more. If "first" or "second" is mentioned, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0078] As indicated in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" do not specifically refer to the singular and may also include the plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of expressly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements. An element defined by the phrase "comprising a..." does not exclude the presence of other identical elements in the process, method, product, or apparatus that includes the element.

[0079] In the description of the embodiments of this application, unless otherwise stated, " / " means "or", for example, A / B can mean A or B; "and / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, in the description of the embodiments of this application, "multiple" refers to two or more.

[0080] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0081] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0082] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. An instrument adjustment fixture, characterized in that, include: Tooling body, seals, and height adjustment components; The tooling body has a top end and a bottom end. The top end of the tooling body is a flange mounting cavity for installing an instrument flange, and the bottom end is a first column. The first column has a first through hole for inserting the sealing element. The first through hole communicates with the flange mounting cavity. The flange mounting cavity has an opening for the instrument flange to enter and exit. The first column is provided with a first external thread. The sealing element has a top end, a middle section, and a bottom end. The top end of the sealing element is located inside the flange mounting cavity, and the upper surface of the top end of the sealing element is used to mate with the instrument flange. The lower surface of the top end of the sealing element contacts the bottom of the flange mounting cavity. The middle section of the sealing element passes through the first through hole, and the bottom end is located outside the tooling body and is used to connect with the air source. The sealing element has a second through hole that penetrates the top end and the bottom end. The second through hole is used to connect the instrument and the air source. The middle section of the sealing element has a second external thread. The height adjustment component has a third through hole for mounting the bottom end of the tooling body and the middle section of the sealing component. The third through hole has a first internal thread for engaging with the first external thread at the connection point with the bottom end of the tooling body, and a second internal thread for engaging with the second external thread at the connection point with the middle section of the sealing component. The first internal thread and the second internal thread have opposite thread directions.

2. The instrument adjustment fixture according to claim 1, characterized in that, The bottom end of the seal is provided with a third external thread for connection to the gas source equipment.

3. The instrument adjustment fixture according to claim 1, characterized in that, The top of the seal is a disc-shaped structure, and the middle and bottom sections of the seal are second columns.

4. The instrument adjustment fixture according to claim 1, characterized in that, The top of the seal is provided with a sealing ring mounting groove.

5. The instrument adjustment fixture according to claim 1, characterized in that, The upper part of the flange mounting cavity has two symmetrically arranged flanges, which are located at both ends and have an opening in the middle. The space formed between the two flanges is used to install the instrument flange.

6. The instrument adjustment fixture according to claim 1, characterized in that, The height adjustment component has a tool relief groove in the middle section of the third through hole.

7. The instrument adjustment fixture according to claim 1, characterized in that, The bottom end of the seal is provided with an operating position for rotating the wrench.

8. The instrument adjustment fixture according to claim 7, characterized in that, The cross-section of the operating position and / or the height adjustment component is a regular polygon.

9. The instrument adjustment fixture according to claim 1, characterized in that, The first external thread is a left-hand external thread, the second external thread is a right-hand external thread, the first internal thread is a left-hand internal thread, and the second internal thread is a right-hand internal thread.

10. The instrument adjustment fixture according to claim 1, characterized in that, The flange mounting cavity includes a first cavity and a second cavity arranged sequentially from top to bottom. The first cavity is used to install the instrument flange, and the second cavity is used to install the top of the seal.

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